Jump to content

sgl_imaging_challenge_6_banner_jupiter_2021.jpg.eacb9f0c2f90fdaafda890646b3fc199.jpg

 

 

NGC 7023 Iris Nebula from the city


jsigone
 Share

Recommended Posts

Here's my attempt at this tough target. I need another full night or two on this and also try for longer subs. I don't think 5min is enough w/ my skies. Think I might have stretched this a bit much, wanting more but not having enough data to do so:(

Hardware:

Scientific Explorer 152mm Mak-Newt F4.8

Celestron ASGT5 mount

Canon XS (self mod) with Astronomiks CLS-CCD clip in

50mm Autoguider/SSAG

Settings:

3h45min of data

ISO 1600, 45 x 5min lights, 18 darks& 50 flats

Software:

Nebulosity 2, CS4, Fitworks

Thanks for looking

5802589811_26bbcf337d_z.jpg

NGC 7023 Iris Nebula 45x5min rework by jsigone, on Flickr

Link to comment
Share on other sites

This is a beautiful image of a very tricky image to both capture and process - Excellent job!

I have a huge soft spot for this nebula - I started trying to get it a few weeks ago and had a couple of nights on it, but then the increased temperature started playing merry hell with my 40D and I started getting a lot of noise (banding)... I managed 5 hours 45 mins on it, but then sadly had to give up (defeated by the banding - Stargazers Lounge - AndyUK's Album: MN190 & Canon 40D - Picture

(These Mak-Newts are beautiful pieces of kit though :))

Link to comment
Share on other sites

That's darned impressive. Like all dusty nebulae this needs time. I'm nowhere near there yet with 6 hours in an OSC from a dark, elevated site. If you can get longer subs without the LP getting you then I would because the dusty outlying regions do respond to that.

Olly

Link to comment
Share on other sites

This is a beautiful image of a very tricky image to both capture and process - Excellent job!

I have a huge soft spot for this nebula - I started trying to get it a few weeks ago and had a couple of nights on it, but then the increased temperature started playing merry hell with my 40D and I started getting a lot of noise (banding)... I managed 5 hours 45 mins on it, but then sadly had to give up (defeated by the banding - Stargazers Lounge - AndyUK's Album: MN190 & Canon 40D - Picture

(These Mak-Newts are beautiful pieces of kit though :))

Nice image you have Andy, that extra FL of the MN190 gets you right in on the core for great resolution. I do have a secret trick up my sleeve on that temp change stuff:evil6:

packed with those hard reusable ice packs. For the 5hrs (including darks) I put on this, the CCD temps stays 55-59*C according to Dark Library

5767135342_b63288e72b_m.jpg

Camera cooler_03 by jsigone, on Flickr

5767134620_8c730d25cd_m.jpg

Camera cooler_01 by jsigone, on Flickr

Link to comment
Share on other sites

That looks really nifty and it obviously works very well.... It looks like you have 4 freezer blocks in there, and the camera then "sits" on a pad of silver foil (or is that a gel pack?).

I've seen some similar photo's from some imagers in Oz who use modded 4 tin peltier-cooled fridges and hang them off the back of their focusers - As I can't spell DIY, that's WAY above my skill level, but what you have looks like a very simple solution. One question though - How much does that "loaded" chill bag weigh?

Link to comment
Share on other sites

I just started doing this as I was tackling dark matching issues. The Lagoon I posted was the first crack at this $13 cooler box. Before the temps off the CCD would range 20-30*F throughout the night. Now they range only 3-4*F

yup some freezer blocks, just some folded tin foil to close the gap. I have it mounted vertically so I can access the battery door w/o to much problem during mid session.

Link to comment
Share on other sites

Okay... I must admit I've never seen one of the "BIG" imaging rigs in the flesh, but that's not quite as heavy as I was expecting... I guess I'm going to have to look around for a suitably-sized chiller bag. The 314L+ has a great FOV for me in getting in deep with a 1000mm FL, but being able to get the wider FOV of an APS-C chip without having to splash out at least another £1000 (even though not hitting the sort of temps the CDD chips reach) is very attractive, and will make life a lot easier if/when I get the rig "on the road".

Thanks!

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
 Share

  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • 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.