Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

sgl_imaging_challenge_banner_30_second_exp_2_winners.thumb.jpg.b5430b40547c40d344fd4493776ab99f.jpg

fwm891

RASA 8 first light image

Recommended Posts

Woke (too) early this morning to find it clear 🙂 as the RASA was still set-up from last evenings efforts I decided to try a few targets. IC405 is the only one processed at the moment. The image comprises 10x 120s subs, gain 122 offset 30 on the ASI294 MC Pro.

I can see that at some stage I've upset the PA but still like the image.

CEM60 Standard mount, processed in PI no calibration frames. Process after integration: ABE, Background neutralisation, colour calibration, saturation and histogram transformation - saved as 16 bit tiff and 8 bit jpg.

More to follow if I can stay awake...

IC405_RASA_ASI294MC-Pro 10x120s.jpg

  • Like 14

Share this post


Link to post
Share on other sites

Nice Francis. Surprisingly little data but deep! A little noisy so I can’t wait to see a full nights data! The star shapes look a lot better compared to the broomstick. 

  • Thanks 1

Share this post


Link to post
Share on other sites

Few more from first light session. Process change:

Initial process for these were APP to integration then PI for colour work.

Horse head (IC434) 5x 120s

M42 10x30s 10x60s 6x120s

Rosette ngc4422 5x120s

 

 

IC405_RASA_ASI294MC_Pro_APP_ABE_ABE.jpg

IC434_RASA_ASI294MC_Pro_APP.jpg

M42_RASA_ASI294MC_PRO_APP_ABE.jpg

Rosette_RASA_ASI294MC_Pro_APP_ABE.jpg

Edited by fwm891
text added
  • Like 8

Share this post


Link to post
Share on other sites

Lovely first light images Francis - shows the potential of the RASA 8 and the what can be done with short subs / less data. Really nice fields of view too.

Look forwards to seeing more of these - I'm getting very tempted to have a play with one of these RASA 8's myself....

  • Thanks 1

Share this post


Link to post
Share on other sites

You're probably super tired now (or asleep), but what a haul of images! I've seen enough of the RASA to know if I was a pure DSO imager, this is what I'd get. 

Edited by Lockie
I spelled You're as your! doh!
  • Thanks 1

Share this post


Link to post
Share on other sites
7 minutes ago, Grant said:

Lovely first light images Francis - shows the potential of the RASA 8 and the what can be done with short subs / less data. Really nice fields of view too.

Look forwards to seeing more of these - I'm getting very tempted to have a play with one of these RASA 8's myself....

Thanks Grant, Still a few bits to sort out. The quoted 25mm spacing definitely requires a filter of some sort in place. I seem to have knocked the mount at some stage the stars at the edges/corners look like a PA adjustment is needed.

I think this scope could become addictive...

Share this post


Link to post
Share on other sites
12 minutes ago, Mark at Beaufort said:

Francis really great astro photos. You certainly have a talent. Hopefully, I will see you next weekend.

Thanks Mark - You should see me at some stage next week end. Really want to meet some of the SGLer's and FLOer's in person

Share this post


Link to post
Share on other sites

That's some photo hoover Francis. Cracking images for such short exposures. How well does it hold focus during a session?

Steve

Edited by sloz1664

Share this post


Link to post
Share on other sites

Cracking images and with such short subs. This has now become my dream scope for EAA! 

  • Like 1

Share this post


Link to post
Share on other sites
2 hours ago, sloz1664 said:

That's some photo hoover Francis. Cracking images for such short exposures. How well does it hold focus during a session?

Steve

Holds focus well. Though temps have been quite stable over the short sessions I've had over the last few days- time will tell

Share this post


Link to post
Share on other sites

Second light night images

These are imaged and process in the same way as those above. Just enjoying getting images at the moment - work on the teckie sides latter when I get more familiar with the scope/camera/filter combos. 

BAT_Neb_ABE.jpg

Nth_Am_Pelican_RASA_PI.jpg

NGC_1499_RASA_PI.jpg

M45_RASA_Crop-PI.jpg

ic1396_RASA_PI.jpg

  • Like 1

Share this post


Link to post
Share on other sites

What camera / filters are you using (Sorry if I missed the post)? Only I'm seeing some huge blue / violet halos around bright stars.

Share this post


Link to post
Share on other sites
18 minutes ago, DaveS said:

What camera / filters are you using (Sorry if I missed the post)? Only I'm seeing some huge blue / violet halos around bright stars.

Hi Dave - Camera is the ASI 294MC Pro, the filter is an IDAS NB-1 dual narrow band. I've had to mount the filter the wrong way round at present - I need an adapter to reverse it so it faces to sky with it's front face. Getting there. It also seems to be missing some H-alpha probably for the same reason.

  • Thanks 1

Share this post


Link to post
Share on other sites

That is ridiculous data for the time on target! Brilliant stuff!

  • Thanks 1

Share this post


Link to post
Share on other sites

Ah, thanks Francis I thought it might be a filter issue. Will be interesting to see how the stars come out with the filter the right way round.

  • Like 1

Share this post


Link to post
Share on other sites

Very nice data! :)
but the stars.... :(

You probably need to make (or 3D print) a spider vein and attach/hide camera cables to each vein to make star spikes more symmetric...

Edited by RolandKol

Share this post


Link to post
Share on other sites
46 minutes ago, RolandKol said:

Very nice data! :)
but the stars.... :(

You probably need to make (or 3D print) a spider vein and attach/hide camera cables to each vein to make star spikes more symmetric...

Hi Roland - If you'd read the earlier post you'd have seen that the 'teckie' stuff comes later. I've had the rasa a couple of days, there are issues and they will be looked at in due course.

  • Like 1

Share this post


Link to post
Share on other sites

Amazing images given the integration time. Making me rethink my Scopes now.... 4 or 5 hours on M42 with my rig attains much less data than what you have  with such a ridiculously short integration time. 

  • Like 1

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.