SMB150 2013 Nominees announced !

Last year someone nominated me for a SMB150 award. This was worldwide recognition as one of the top 150 IT people in SMB in the world.
Yes, I got one of the awards and it was super special as one of my MVP friends, Eriq Neale, was the face of the award and passed away from cancer after the winners were announced.

 I have again been nominated.  Please Vote. You can vote daily!  One vote per IP, per day. You don’t have to sign up for an account on the website. Just click the Vote button on my page.

I do like people to sign up as then they can leave comments :)

Configuring a SonicPoint to work with management from a SonicWALL and enabling Mac Address filtering can cause Microsoft Roaming user profiles to fail.

The following has taken me many hours of research. I seem to be the only one that has reported this issue. No amount of Googling produced results and this issue has SonicWALL stumped. I have finally made a breakthrough and want to share it in the case someone else needs this information.

Settings up a SonicPoint wireless access point to work with management from a SonicWALL firewall and enabling Mac Address filtering can cause Microsoft Roaming user profiles to fail.

If a machine has an existing copy of a profile on the hard disk for a user, the profile will not fail to roam.
If you have a new user whom has never roamed to a machine and you have the wireless with Mac Address filtering turned on and this machine uses the wireless you may get one of the following:
You have been logged on with a temporary profile You cannot access your files and files created in this profile will be deleted when you log off. To fix this, log off and try logging on later. Please see the Eventlog for details or contact your system administrator.

or
User Profile service There was a problem with your roaming profile. You have been logged on with your previously saved local profile. Please see the Eventlog for details or contact your administrator.

You will end up with no profile on the local machine. This has been found to occur on Windows 7.

The solution was found to be disabling SMB2 (only at the workstation end).

From a command prompt type:

sc config lanmanworkstation depend= bowser/mrxsmb10/nsi
sc config mrxsmb20 start= disabled

To re-enable the SMB2 features from a command prompt type:

sc config lanmanworkstation depend= bowser/mrxsmb10/mrxsmb20/nsi
sc config mrxsmb20 start= auto
Eventlog entries that commonly appear on the local workstation Eventlog (Note: no errors or information appears on the server Eventlogs).

***********************


Log Name:      System
Source:        NETLOGON
Date:          <date>
Event ID:      5719
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      <workstation name>

Description:
This computer was not able to set up a secure session with a domain controller in domain <domain name> due to the following:
There are currently no logon servers available to service the logon request.
This may lead to authentication problems. Make sure that this computer is connected to the network. If the problem persists, please contact your domain administrator.�
ADDITIONAL INFO
If this computer is a domain controller for the specified domain, it sets up the secure session to the primary domain controller emulator in the specified domain. Otherwise, this computer sets up the secure session to any domain controller in the specified domain.
Event Xml:
<Event xmlns=”http://schemas.microsoft.com/win/2004/08/events/event“>
  <System>
    <Provider Name=”NETLOGON” />
    <EventID Qualifiers=”0″>5719</EventID>
    <Level>2</Level>
    <Task>0</Task>
    <Keywords>0×80000000000000</Keywords>
    <TimeCreated SystemTime=”" />
    <EventRecordID>196575</EventRecordID>
    <Channel>System</Channel>
    <Computer><workstation name></Computer>
    <Security />
  </System>
  <EventData>
    <Data><Domain name></Data>
    <Data>%%1311</Data>
    <Binary>5E0000C0</Binary>
  </EventData>
</Event>

 ***********************


Log Name:      System
Source:        Microsoft-Windows-GroupPolicy
Date:          <date>
Event ID:      1055
Task Category: None
Level:         Error
Keywords:    �
User:          SYSTEM
Computer:      <workstation name>

Description:
The processing of Group Policy failed. Windows could not resolve the computer name. This could be caused by one of more of the following:
a) Name Resolution failure on the current domain controller.
b) Active Directory Replication Latency (an account created on another domain controller has not replicated to the current domain controller).
Event Xml:
<Event xmlns=”http://schemas.microsoft.com/win/2004/08/events/event“>
  <System>
    <Provider Name=”Microsoft-Windows-GroupPolicy” Guid=”{AEA1B4FA-97D1-45F2-A64C-4D69FFFD92C9}” />
    <EventID>1055</EventID>
    <Version>0</Version>
    <Level>2</Level>
    <Task>0</Task>
    <Opcode>1</Opcode>
    <Keywords>0×8000000000000000</Keywords>
    <TimeCreated SystemTime=”" />
    <EventRecordID>196595</EventRecordID>
    <Correlation ActivityID=”{817703C6-09B9-40EE-A951-6DA185ED3935}” />
    <Execution ProcessID=”1256″ ThreadID=”1644″ />
    <Channel>System</Channel>
    <Computer><workstation name></Computer>
    <Security UserID=”S-1-5-18″ />
  </System>
  <EventData>
    <Data Name=”SupportInfo1″>1</Data>
    <Data Name=”SupportInfo2″>1632</Data>
    <Data Name=”ProcessingMode”>1</Data>
    <Data Name=”ProcessingTimeInMilliseconds”>2855</Data>
    <Data Name=”ErrorCode”>1355</Data>
    <Data Name=”ErrorDescription”>The specified domain either does not exist or could not be contacted. </Data>
  </EventData>
</Event>

 ***********************


Log Name:      System
Source:        Microsoft-Windows-GroupPolicy
Date:          <date>
Event ID:      1112
Task Category: None
Level:         Warning
Keywords:    �
User:          <domain\username>
Computer:      <workstation name>
Description:

The Group Policy Client Side Extension Folder Redirection was unable to apply one or more settings because the changes must be processed before system startup or user logon. The system will wait for Group Policy processing to finish completely before the next startup or logon for this user, and this may result in slow startup and boot performance.

Event Xml:
<Event xmlns=”http://schemas.microsoft.com/win/2004/08/events/event“>
  <System>
    <Provider Name=”Microsoft-Windows-GroupPolicy” Guid=”{AEA1B4FA-97D1-45F2-A64C-4D69FFFD92C9}” />
    <EventID>1112</EventID>
    <Version>0</Version>
    <Level>3</Level>
    <Task>0</Task>
    <Opcode>1</Opcode>
    <Keywords>0×8000000000000000</Keywords>
    <TimeCreated SystemTime=”" />
    <EventRecordID>196654</EventRecordID>
    <Correlation ActivityID=”{C5996A1B-4100-4EA0-9A33-0E26DD1B690B}” />
    <Execution ProcessID=”1256″ ThreadID=”5940″ />
    <Channel>System</Channel>
    <Computer><workstation name></Computer>
    <Security UserID=” S-1-5-21-…<SID Shortened>….4-2792674914-1221″ />
  </System>
  <EventData>
    <Data Name=”SupportInfo1″>1</Data>
    <Data Name=”SupportInfo2″>3961</Data>
    <Data Name=”ProcessingMode”>2</Data>
    <Data Name=”ProcessingTimeInMilliseconds”>4665</Data>
    <Data Name=”ErrorCode”>1274</Data>
    <Data Name=”ErrorDescription”>The group policy framework should call the extension in the synchronous foreground policy refresh. </Data>
    <Data Name=”DCName”>\\<SERVER FQDN> </Data>
    <Data Name=”ExtensionName”>Folder Redirection</Data>
    <Data Name=”ExtensionId”>{25537BA6-77A8-11D2-9B6C-0000F8080861}</Data>
  </EventData>
</Event>

 ***********************


Log Name:      Application
Source:        Microsoft-Windows-User Profiles General
Date:          <date>
Event ID:      1509
Task Category: None
Level:         Warning
Keywords:    �
User:          <domain\username>
Computer:      <workstation name>
Description:

Windows cannot copy file \\?\UNC\<Server Name>$NOCSC$\profiles$\<USERAME.V2>\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Windows Small Business Server 2008\Internal Web site.lnk to location \\?\C:\<Users\username\>AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Windows Small Business Server 2008\Internal Web site.lnk. This error may be caused by network problems or insufficient security rights.
 DETAIL – The specified network name is no longer available.

Event Xml:
<Event xmlns=”http://schemas.microsoft.com/win/2004/08/events/event“>
  <System>
    <Provider Name=”Microsoft-Windows-User Profiles General” Guid=”{DB00DFB6-29F9-4A9C-9B3B-1F4F9E7D9770}” />
    <EventID>1509</EventID>
    <Version>0</Version>
    <Level>3</Level>
    <Task>0</Task>
    <Opcode>0</Opcode>
    <Keywords>0×8000000000000000</Keywords>
    <TimeCreated SystemTime=”" />
    <EventRecordID>26585</EventRecordID>
    <Correlation />
    <Execution ProcessID=”1036″ ThreadID=”5804″ />
    <Channel>Application</Channel>
    <Computer><workstation name></Computer>
    <Security UserID=”S-1-5-21-…<SID SHORTENED>….4-2792674914-1221″ />
  </System>
  <EventData Name=”EVENT_COPYERROR”>
    <Data Name=”Source”>\\?\UNC\<Server Name>$NOCSC$\profiles$\<USERAME.V2>\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Windows Small Business Server 2008\Internal Web site.lnk</Data>
    <Data Name=”Target”>\\?\C:\<Users\username\>AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Windows Small Business Server 2008\Internal Web site.lnk</Data>
    <Data Name=”Error”>The specified network name is no longer available.
</Data>
  </EventData>
</Event>

 ***********************


Log Name:      Application
Source:        Microsoft-Windows-User Profiles General
Date:          <date>
Event ID:      1509
Task Category: None
Level:         Warning
Keywords:    �
User:          <domain\username>
Computer:      <workstation name>
Description:
Windows cannot copy file \\?\UNC\<Server Name>$NOCSC$\profiles$\<USERAME.V2>\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini to location \\?\C:\<Users\username\>AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini. This error may be caused by network problems or insufficient security rights.
 DETAIL – The specified network name is no longer available.

Event Xml:
<Event xmlns=”http://schemas.microsoft.com/win/2004/08/events/event“>
  <System>
    <Provider Name=”Microsoft-Windows-User Profiles General” Guid=”{DB00DFB6-29F9-4A9C-9B3B-1F4F9E7D9770}” />
    <EventID>1509</EventID>
    <Version>0</Version>
    <Level>3</Level>
    <Task>0</Task>
    <Opcode>0</Opcode>
    <Keywords>0×8000000000000000</Keywords>
    <TimeCreated SystemTime=”" />
    <EventRecordID>26586</EventRecordID>
    <Correlation />
    <Execution ProcessID=”1036″ ThreadID=”5804″ />
    <Channel>Application</Channel>
    <Computer><workstation name></Computer>
    <Security UserID=”S-1-5-21-…<SID SHORTENED>….4-2792674914-1221″ />
  </System>
  <EventData Name=”EVENT_COPYERROR”>
    <Data Name=”Source”>\\?\UNC\<Server Name>$NOCSC$\profiles$\<USERAME.V2>\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini</Data>
    <Data Name=”Target”>\\?\C:\<Users\username\>AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini</Data>
    <Data Name=”Error”>The specified network name is no longer available.
</Data>
  </EventData>
</Event>

 

***********************


Log Name:      Application
Source:        Microsoft-Windows-User Profiles General
Date:          <date>
Event ID:      1509
Task Category: None
Level:         Warning
Keywords:    �
User:          <domain\username>
Computer:      <workstation name>
Description:
Windows cannot copy file \\?\UNC\<Server Name>$NOCSC$\profiles$\<USERAME.V2>\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Windows Explorer.lnk to location \\?\C:\<Users\username\>AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Windows Explorer.lnk. This error may be caused by network problems or insufficient security rights.
 DETAIL – The specified network name is no longer available.

Event Xml:
<Event xmlns=”http://schemas.microsoft.com/win/2004/08/events/event“>
  <System>
    <Provider Name=”Microsoft-Windows-User Profiles General” Guid=”{DB00DFB6-29F9-4A9C-9B3B-1F4F9E7D9770}” />
    <EventID>1509</EventID>
    <Version>0</Version>
    <Level>3</Level>
    <Task>0</Task>
    <Opcode>0</Opcode>
    <Keywords>0×8000000000000000</Keywords>
    <TimeCreated SystemTime=”" />
    <EventRecordID>26587</EventRecordID>
    <Correlation />
    <Execution ProcessID=”1036″ ThreadID=”5804″ />
    <Channel>Application</Channel>
    <Computer><workstation name></Computer>
    <Security UserID=”S-1-5-21-…<SID SHORTENED>….4-2792674914-1221″ />
  </System>
  <EventData Name=”EVENT_COPYERROR”>
    <Data Name=”Source”>\\?\UNC\<Server Name>$NOCSC$\profiles$\<USERAME.V2>\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Windows Explorer.lnk</Data>
    <Data Name=”Target”>\\?\C:\<Users\username\>AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Windows Explorer.lnk</Data>
    <Data Name=”Error”>The specified network name is no longer available.
</Data>
  </EventData>
</Event>

***********************


Log Name:      Application
Source:        Microsoft-Windows-User Profiles General
Date:          <date>
Event ID:      1534
Task Category: None
Level:         Warning
Keywords:    �
User:          <domain\username>
Computer:      <workstation name>
Description:
There are too many profile copy errors. Refer to the previous events for details. Windows will not log any additional copy errors for this copy process.

Event Xml:
<Event xmlns=”http://schemas.microsoft.com/win/2004/08/events/event“>
  <System>
    <Provider Name=”Microsoft-Windows-User Profiles General” Guid=”{DB00DFB6-29F9-4A9C-9B3B-1F4F9E7D9770}” />
    <EventID>1534</EventID>
    <Version>0</Version>
    <Level>3</Level>
    <Task>0</Task>
    <Opcode>0</Opcode>
    <Keywords>0×8000000000000000</Keywords>
    <TimeCreated SystemTime=”" />
    <EventRecordID>26594</EventRecordID>
    <Correlation />
    <Execution ProcessID=”1036″ ThreadID=”5820″ />
    <Channel>Application</Channel>
    <Computer><workstation name></Computer>
    <Security UserID=”S-1-5-21-…<SID SHORTENED>….4-2792674914-1221″ />
  </System>
  <EventData Name=”EVENT_TOO_MANY_COPY_ERRORS”>
  </EventData>
</Event>

 ***********************


Log Name:      Application
Source:        Microsoft-Windows-User Profiles Service
Date:          <date>
Event ID:      1511
Task Category: None
Level:         Error
Keywords:    �
User:          <domain\username>
Computer:      <workstation name>
Description:
Windows cannot find the local profile and is logging you on with a temporary profile. Changes you make to this profile will be lost when you log off.

Event Xml:
<Event xmlns=”http://schemas.microsoft.com/win/2004/08/events/event“>
  <System>
    <Provider Name=”Microsoft-Windows-User Profiles Service” Guid=”{89B1E9F0-5AFF-44A6-9B44-0A07A7CE5845}” />
    <EventID>1511</EventID>
    <Version>0</Version>
    <Level>2</Level>
    <Task>0</Task>
    <Opcode>0</Opcode>
    <Keywords>0×8000000000000000</Keywords>
    <TimeCreated SystemTime=”" />
    <EventRecordID>26595</EventRecordID>
    <Correlation ActivityID=”{859BE364-2083-0002-1408-4B58C6DCCD01}” />
    <Execution ProcessID=”1036″ ThreadID=”5588″ />
    <Channel>Application</Channel>
    <Computer><workstation name></Computer>
    <Security UserID=”S-1-5-21-…<SID SHORTENED>….4-2792674914-1221″ />
  </System>
  <EventData>
  </EventData>
</Event>

***********************


Log Name:      Application
Source:        Microsoft-Windows-Folder Redirection
Date:          <date>
Event ID:      510
Task Category: None
Level:         Warning
Keywords:    �
User:          <domain\username>
Computer:      <workstation name>
Description:
Folder redirection policy application has been delayed until the next logon because the group policy logon optimization is in effect.

Event Xml:
<Event xmlns=”http://schemas.microsoft.com/win/2004/08/events/event“>
  <System>
    <Provider Name=”Microsoft-Windows-Folder Redirection” Guid=”{7D7B0C39-93F6-4100-BD96-4DDA859652C5}” />
    <EventID>510</EventID>
    <Version>0</Version>
    <Level>3</Level>
    <Task>0</Task>
    <Opcode>0</Opcode>
    <Keywords>0×8000000000000000</Keywords>
    <TimeCreated SystemTime=”" />
    <EventRecordID>26598</EventRecordID>
    <Correlation ActivityID=”{C5996A1B-4100-4EA0-9A33-0E26DD1B690B}” />
    <Execution ProcessID=”1256″ ThreadID=”5940″ />
    <Channel>Application</Channel>
    <Computer><workstation name></Computer>
    <Security UserID=”S-1-5-21-…<SID SHORTENED>….4-2792674914-1221″ />
  </System>
  <EventData Name=”EVENT_FDEPLOY_WarningSyncLogonRequired”>
  </EventData>
</Event>

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What happened to my CDO in Exchange 2007 SP1 ?

I write a number of VBS scripts to help perform functions on servers. Some of these send me alert emails using CDO.
I have had no issues with VBS files and CDO access however I started compiling to EXE files and everything changed.  

The VBS scripts either use:

set objMsg = CreateObject(“CDO.Message”)

With objMsg
.To = “email address”
.From = “email address”
……. etc …………….
end with

Or more chaotically

Set objMsg = CreateObject(“CDO.Message”)

objMsg.From = “email address”
objMsg.To = “email address”
etc

To send me the results of some test.

This has been working for ages, and continues to work however, someone pinched my code. I need to start protecting it. I can’t resort to compiling to vbe (Easily unencrypted) so I instead found a solution to compile to exe files.

The exe files worked for a while (over a year) and suddenly, they started failing.

They brought up “Error”, the line number that broke but no error description. The vbs files still work fine.

I looked at the line that fails.

It is the .To = “email address” or objMsg.From = “email address” in my above samples.
i.e. the line that tries to do the first action with CDO.

I tried all kinds of error trapping/reporting to bring up an error message. Nothing. It is as if CDO is not there.

But only for exe files ?

I tried making the exe file a trusted file. I allowed it through the firewall and tried loads of other actions and tests.
It does not work.

I ran filemon/regmon and process monitor and compared a working and failing server.

I wrote a test script that has about 10 lines and just tries to send an email. As a VBS, it is fine. As an EXE it fails.
These 10 lines created over 30,000 entries in Process Explorer.

Now started the long trawl through the output, comparing each section.

On the machine that works, the exe gets access to the registry, looks for the CDO handler for Win32, finds cdosys.dll and executes.

On the machine that fails, it looks for the win32 dll for CDO, falls back to win16 and then fails.

 It seems some key information for CDO is missing in the registry.

I ran the vbs file. It looks for the CDO handler for Win64, finds cdoex.dll. It seems cscript and wscript want to use the Win64 registry key, not the Win32.

Now I see why the exe could potentialy fail and yet the vbs works. They access CDO via 2 different ways.

A little more research and I found that Exchange 2007 SP1 can loose the 32bit CDO reference.

All I needed to do was drop to a cmd prompt.

C:\Windows\syswow64\regsvr32 cdosys.dll

All fixed !

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EOS to PST

If you have a Coronado Personal Solar Telescope and a DSLR, you will likely want to join the two at some stage. You might rush out and buy a T adaptor and a T ring only to find that no matter how hard you try, you can’t get focus. (Prime) You can take photos using the Afocal technique but your only other option is to put the open throat of the DSLR over an eyepiece and try to get as close as you can without making contact with the DSLR mirror (Fold back the eyepiece rubber eye cup)


I have tried Afocal and the open throat but I want to take some video and zoon in. Both of these methods fall short. I did some research online and not many people are talking about a solution. Lot’s report the issue but not many have taken a hacksaw to Barlow lenses and T adaptors and experimented.


I have a Canon EOS. I found this page for a PST to EOS adaptor.  http://sweiller.free.fr/ATM/PST-EOS.html


Many blogs and Forums point back to this website. I also found one other page http://www.hapb.net/Solar/sunphoto.html


Sylvain Sweiller used a Meade 07273 #126 2x Telenegative Barlow Lens (1.25″). I found something similar on eBay and ordered a MEADE Series 4000 #126 2x Short-Focus Barlow (1.25″).


I ordered a T adaptor and when the gear arrived, I shortened the T Adaptor to 20mm and removed the front element of the Barlow.

I found placing the element/assembly into the PST (The bottom Barlow lens is touching the bottom of the eyepiece holder) and then the adaptor to the camera, placing the camera to the PST I can get the focus I need.

(Push (via the camera T-ring) the adaptor into the Coronado eyepiece holder until the top of the 1 1/4″ tubing is completely inserted).


Now I just have to take photos as normal and work on my Registax skills.


In this photo you see the Meade Barlow lens and then the same lens disassembled. Note the black lens assembly is what we need. The rest is now useless.

 

I grabbed the T Adaptor and cut the pipe back to 20 mm from the hilt (Hacksaw). I filed it back and used sandpaper to smooth it down.



Unscrew the lens assembly from the Barlow. Clean back the threads and make the assembly thinner to fit into the T Adaptor.

I used a sharp knife and simply sliced down, cutting off plastic. I also used a metal file to smooth off. 




You now have what you need to assemble.


You can approximate the distance the lens needs to be from the hilt or drop the lens into the PST later. (There will be an image)



Put a plastic cap on each end to protect your new adaptor.


This can be used with a second Barlow lens over the T Adaptor.



Here is the PST with nothing in the EyePiece socket (No eye pieces)


Drop the Lens Piece into the Eye Piece holder of the PST



Add the T Adaptor (With the camera attached). Here there is no camera as it would obstruct the photo for you to see how this works.



Take a better look





Now take your photos



Don’t forget to use the camera histergram to make sure that the Red channel has loads of data in the middle. This will give you detail and stop blowouts.


Enjoy !

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Can’t see the sun (Coronado PST)?

I have a Coronado 40 mm PST and I can’t see the sun.

I have the white dot in the solar ranger and the eye piece in. I look through the Eyepiece and I can’t see the sun.

 

Trust me, the sun is still there.

 

I have found that the solar ranger represents a very large section of space. The slightest movement will take you to the sun.

A knock and the alignment is way out.

 

I generally line up the solar ranger and then take a few more minutes to actually locate the sun.

I move the telescope about until I can see the sun.

 

A larger eye relief on the eye piece would help and a wider angle lens.

 

Regardless, don’t give up. Keep trying.

 

I had to find the process to align my scope by trial and error.

 

I can see online that many others have had the “missing sun”. I also see that no one seems to have posted a solution.

I Googled the Coronado manual, instructions and hints and tricks and found nothing.

 

Honestly, the solution is to keep moving the scope until you do see the sun. It will be very obvious when you find it. Even if you are out of focus  (Oh and stop messing with the focus knob. It will just make things harder for you). 

 

Download the Coronado PST manual here http://www.optcorp.com/pdf/Coronado/pst.pdf

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Why Hydrogen Alpha?

People have been using thick lenses and filters to photograph the sun for ages.
Some use ND400 filters, others use Telescope White light filters.

 

Here is a Canon EOS 5D with ND400 and an image of the sun I took with the transit of Venus. You can see some sun spots.  



Looks cool.

Using a Solar filter (White light filter) on a normal telescope.



No surface detail.

Why am I keen on Solar Hydrogen Alpha photos?

One look for “Coronado pst” on Google images explains the answer.

The Coronado pst is a Personal Solar Telescope which passes only Hydrogen Alpha and has a pass band width of under one angstrom (one ten-billionth of a meter).

This means super detailed images of the suns surface detail. If you take a photo in this range, separate into R G B photos, keep the red and work with it you can get some awesome photos.

Here is a Canon EOS 7D, Coronado PST stacked with Registax.



Take a look at

http://www.astronomyknowhow.com/hydrogen-alpha.htm
The sun contains many elements but the most abundant by far is hydrogen. The visible layers (the photosphere and the chromosphere) is the only part of the sun that is cool enough for hydrogen to exist in it’s atomic form and it is here that we can see the absorption and emission spectra for hydrogen.

I think you can see why Hydrogen Alpha is so important. Further filtering, better scopes (mine is 40mm) and more skill and you can really get some exciting photos .

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