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_2019_sp_banner.thumb.jpg.a0ff260c05b90dead5c594e9b4ee9fd0.jpg

Andyfx

What can you do with a 30 second sub?

Recommended Posts

Hey everyone, I thought it'd be nice to show people what different scopes and setups can do with a single 30 second sub.

How bout posting a few of your own images?

Rules are:

  • Use any 30 second sub
  • Process as desired
  • Post an uncropped image (so people can see the FOV)

Here's a quick one using my Orion data from the other night and the equipment in my sig.

post-11563-0-13036900-1358858298_thumb.p

Share this post


Link to post
Share on other sites

This is a single 30s Sub - ISO 1600 - taken through my unguided 200p f/6 Newtonian. Camera - unmodded Canon 5D Mk I.

post-27164-0-31781700-1358858602_thumb.j

Share this post


Link to post
Share on other sites

These are very impressive. Perhaps I'm missing the obvious but are they prime focus, eyepiece projection or even afocal?

Dave

Share this post


Link to post
Share on other sites

No worries lol, looks good btw.

Just a bit of fun really and maybe it might help anyone trying to decide what scope they might want.

Share this post


Link to post
Share on other sites

Nice images. Shame about the uncropped thing, as I only retained the cropped versions of all my 30 sec subs :rolleyes2:

  • Like 1

Share this post


Link to post
Share on other sites

OK, here you go. Darkened a bit and star spikes added :grin:

KQkG8.jpg

Oh, it was taken with 200P - EQ5 - Canon 1000D - Prime

Edited by Catweazel
  • Like 1

Share this post


Link to post
Share on other sites

Nice :-) Can see a theme emerging here lol.

LOL, me too; I only ever took pics of the Orion Neb and the Moon. If I ever get clear skies here again, I will have a go at something different :smiley:

Share this post


Link to post
Share on other sites

What a great idea for a thread.

Here's a small stack of 30s with a Nikon D7000 and the stock zoom at 18mm on a static tripod. It's also been cropped I'm afraid because the Milky Way was falling into some trees. It's full width though.

Dave.

post-493-0-08679800-1358863566_thumb.jpg

  • Like 1

Share this post


Link to post
Share on other sites

What a great thread indeed. It gives me a really good idea of what I should be aiming for when setting up and getting the first few test shots back. Thanks Andyfx you're a star (pardon the pun)

  • Like 1

Share this post


Link to post
Share on other sites

Thanks Richie092. The idea really was, if i had a certain setup and took a quick 30 second snap, what'd the result be from that equipment. The idea wasn't to stack loads of 30 second subs, just work with a single one. That way everyone is the same. There's no point comparing an image if one person uses a single sub and another uses 400 stacked.

Share this post


Link to post
Share on other sites

Here's a 60s sub I have of M57. This is a raw, mono frame from my 12" F5 newt with a mono 383L+.. 16Mbytes.. so it could take a while to download.

https://dl.dropbox.com/u/44641599/m57_60s_1.fit

The frame is uncorrected... absolutely raw.

And a compressed version of the above:

https://dl.dropbox.com/u/44641599/M57_60s_compressed.jpg

Note: the 15th mag galaxy IC1296 is just showing through in the background.

Image scale is 0.74 arc seconds per pixel... my aimed for FWHM is 3 pixels (2 on the diagonal).. I'm not quite there yet.

Derek

Edited by rfdesigner
  • Like 1

Share this post


Link to post
Share on other sites

Here's an image of M57 - just a processed single 12 second sub taken with a modified webcam and LX200 10" (in 2005)

ring-12sec.jpg

And here's the (resized) result of a very large stack of these 12 second subs, combined with a stack of 30 second (colour) subs.

M57_2.jpg

Adrian

  • Like 3

Share this post


Link to post
Share on other sites

It seems I missed the point ! Ah well.

Here then is a single 30s sub straight from the camera. If this doesn't put people off trying I don't know what will :grin:

post-493-0-70814900-1358867819_thumb.jpg

  • Like 2

Share this post


Link to post
Share on other sites

I like the idea of this thread :) Here is another image of "old faithful" taken last night with newly set up Atik 314L+ and SMC Takumar 200mm f4 lens. 30s of Ha single sub stretched in PS but uncropped. And another with more stretching. I'll see what else I can find too :)

post-13131-0-48844300-1358871803_thumb.p post-13131-0-61372600-1358872551_thumb.p

Edited by Gina
  • Like 1

Share this post


Link to post
Share on other sites

That's cool Gina, i'm always interested in how much Ha etc comprises certain objects :-)

Share this post


Link to post
Share on other sites

Found a wide-field image with 1100D DSLR - 30s at ISO 1600 and -7C one sub stretched and resized for upload.

post-13131-0-41809700-1358874767_thumb.j

  • 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.