Jump to content

Walking on the Moon

Sun H-Alpha 30.03.16


Recommended Posts

Too many clouds now... But was able to get a few "experiments" done! :p

Confirmed that (despite initial failure) I can *Barlow* the Lunt LS50THa. 
Using the "good old" (generic) Skywatcher Barlow, I managed to get it
to focus by unscrewing the Barlow PLUS (shiney bit) nosepiece, clamping
BOTH into the Lunt Brass ring holder, then building a stack of T2 rings
around this to space the ZWO120MM, giving ~1.9x ... and STILL focus!

I also confirmed that I can now banish (the more intense) Newtons Rings
by using a *custom* tracking rate in EQmod 10% less than Solar! That
way, I can avoid the Sun slipping too far from my Sweet Spot position. :)

Of course, I've let slip a few other optimal setting (excuses, excuses!) -
Focus maybe? But upshot is I can do most things to some level now? :D

Might document it a Web Page... Have difficulty remembering myself! :rolleyes2:




Edited by Macavity
  • Like 5
Link to comment
Share on other sites

5 hours ago, Davey-T said:

Lovely image Chris, looking forward to your first solar mosaic :)


You mean this isn't finished yet? lol :p

So many variables, so little time! I do sense Barlowing has
extracted a little bit more detail... Hurrah for Skywatcher! :thumbsup:  

Experimenting with IMPPG (LR deconv + neg / pos toning). 
The number of permutations is substantial, but indeed there
might be some interesting stuff emerging in the upper right
quadrant? Spicules too? But I'll start small - 3x3 mosaic? ;)


Edited by Macavity
  • Like 3
Link to comment
Share on other sites

Very nice. I am excited to begin my solar viewing with my Lunt LS50 and try a go at imaging. This are very encouraging, you're making good progress! Looks great.  


May I ask? How did you do that color gradient in the background of the second image ? I use GIMP not Photoshop, familiar with layers, ect.  I can get color solar images in whichever color with curves too, just curious on the fading color background 

Edited by Tyson M
Link to comment
Share on other sites

Hey, ask away! Do note that most of my ideas are adapted from available
information. But may address specific issues of a Lunt LS50 + ZWO cam.

If I pump up the gain (I use FireCapture to record AVIs) on my camera,
I may see a number of faint / diffuse rings around the solar disk? These
may / may not be exactly concentric with the disk. This is a "feature"?!? :p

Or indeed maybe an "inherent limitation" of "low-end" solar scopes (with
a diagonal in the optical path). You tend to mostly see these at high gain
(when trying to image prominences?). Whatever! I tend to use the *post
processing* (e.g. GIMP "levels") to de-emphasise these features a bit? :)

The basic answer: The background is serendipitous (That is the word?) :D

P.S. I see quite a lot of H-Alpha images with greater/lesser backgrounds?
I suppose, e.g., if I were trying to generate "Magazine Quality" images,
I might just try to crop / feather background around the "useful" area? ;)

Edited by Macavity
  • Like 1
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.