Username:

Password:

Altair AstroDIO DehumidifiersAtik CamerasModern AstronomyDavid HindsNe3 Filters

Author Topic: The Heart Nebula (Kelling), Ha/DSLR and combi  (Read 1077 times)

0 Members and 1 Guest are viewing this topic.

Offline Carole

  • Poster God
  • *****
  • Posts: 1626
    • Carole Pope Astro-Imaging
The Heart Nebula (Kelling), Ha/DSLR and combi
« on: 21:25:58, 18 September, 2012 »
My aim at Kelling was to spend 2 nights with the Atik383L and 2 nights with the DSLR:
a) To Compare results
b) Didn't want to spend the entire time using the Atik as it's new to me and didn't want to waste good skies dabbling.
c) If I got results with both to try to combine them.

Clouds conspired to allow me only 1 sub on the last night which was when I was using the Atik to capture the Heart Nebula, I did not realise what a huge object it was.

So here goes:
The Ha with the Atik is the sum total of 1 sub at 15mins - I am really amazed at what this camera can capture.
It has a reasonable amount of noise being only 1 sub and funnily enough I seemed to get a better result without calibration files, so this is light frame only.

images are as follows:
1. 1 x 900sec Atik383L Ha filter 7nm (cooled to -10 degres) ED80 on NEQ6 captured in Artemis
2. 27 x 5mins 800 ISO Modified Canon 450D (same kit as before captured in APT with dithering).
3. Both images aligned in Maxim, and combined in Photoshop CS3 to get a combi of HaRGB
Slight crop as I haven't quite worked out the rotational orientation of the 2 cameras yet.

Note: Note the Atik and DSLR images are flipped horizontally.

Carole




Mount: HEQ5,  Telescopes: SW ED120 Pro and SW Evostar ED80 pro, WO ZS71 APO,  SW130PDS
Cameras: Modified Canon EOS 1100D, Atik 460EX, Atik314, DMK21, DBK21, Dual rig options. Observatory: SkyPOD & PZT
https://sites.google.com/site/caroleastroimaging/home

Offline tomhow

  • Tom How
  • Galactic Poster
  • ******
  • Posts: 3130
  • Making equipment is far more fun than buying it.
    • The Curdridge Observatory
Re: The Heart Nebula (Kelling), Ha/DSLR and combi
« Reply #1 on: 21:48:01, 18 September, 2012 »
It's my favourite part of the sky again: The Rolling Stones Nebula :)

A big wodge of data here Carole. You're right: The single atik frame shows vast potential. The DSLR frames really show what a low contrast region this is, even under great skies.

Combining the two has had a really interesting effect of getting rid of the rich star field. This is no bad thing as it really makes the nebula itself pop out at you.

Looking forward to seeing a few more Ha frames combined in now you're back home.

Tom
Tak Sky 90, Atik 490, Homemade Mount, OAG, Lodestar

The Curdridge Observatory

Offline Roger B

  • Administrator
  • Galactic Poster
  • *****
  • Posts: 9008
    • Capricorn1 observatory
Re: The Heart Nebula (Kelling), Ha/DSLR and combi
« Reply #2 on: 21:52:38, 18 September, 2012 »
Well done Carol,   The ccd route is a different ball game isn't it.  

Roger

Scopes - TS65q, W/O 110 Triplet
Mount - EQ6 PRO via  Eqmod,  Rowan belt modded
Cameras - SX694, QSI583WSG,Lodestar Guidecam, GP-Cam, QHY5II.
TS 9mm OAG
Quantum 7x1.25 EFW, Baader LRGB,Ha,OIII,SII Filters 
Quark chromo

SGPro, Pixinsight.

************AND NO TIME TO USE IT************

Offline chris.bailey

  • Administrator
  • Galactic Poster
  • *****
  • Posts: 9694
  • If at last you do succeed, don't try again
    • Rosemount Observatory
Re: The Heart Nebula (Kelling), Ha/DSLR and combi
« Reply #3 on: 22:31:16, 18 September, 2012 »
Very nice Carole. Once you get used to it the 383 is a very capable beasty. It seems to like lots of calibration frames and will benefit from dark subtraction if nothing else. Flats are more of a problem as they need to be at least 2 seconds long to avoid shadowing from the shutter.
LX200|ZS70|FSQ85|FLT110|Altair DF250RC|EQ6 Pro(Rowan Belt Mod)|ParamountMX
ATIK383L+/EFW2/OAG|Lodestar|Baader 36mm LRGBHaSIIOIII
Starlight Express SXVRH16/ONAG/FW|Lodestar X2|Baader 2" Filters
Starlight Express SXVRH814/ONAG/FW|LodestarX2|Baader 2" Filters
Lunt LS60PTBF1200|DMK41|Quark Chromo
Samyang 135mm f1.8

Offline psjshep

  • Phil, who still has a job
  • Administrator
  • Galactic Poster
  • *****
  • Posts: 10169
  • My god! It's full of stars.... just not here often
    • Some astro Pics
Re: The Heart Nebula (Kelling), Ha/DSLR and combi
« Reply #4 on: 22:35:45, 18 September, 2012 »
Great to meet you again, Carole....

Cannot add much to what has already been said - super images...... I admire your dedication in comparing two different imaging devices at a Sky Camp  :clap:

I only ever went down the dedicated CCD route (cooled, specialised camera) - I have no experience with a DSLR and probably never will... but I am constantly surprised by the images which DSLR-ers pull off.

Phil
--------------------------------------------------------------------------
Web Images

Offline Carole

  • Poster God
  • *****
  • Posts: 1626
    • Carole Pope Astro-Imaging
Re: The Heart Nebula (Kelling), Ha/DSLR and combi
« Reply #5 on: 01:05:59, 19 September, 2012 »
Thanks Roger, yes it certainly is.

Thanks also Chris, yes very pleased with the results so far, yes already encountered the shadow from the shutter problem, but the Atik people sorted me out, so I know where I am going with flats now. 

Quote
I admire your dedication in comparing two different imaging devices at a Sky Camp 
Well it was more of a need to see how much difference a CCD camera would be compared to the DSLR and my question was certainly answered on that front.  But also because as you know I am not a fan of Mono, and thought I could use the DSLR for colour until such time I can afford 2" LRGB filters. 

I think it was a good exercise though.

Carole
Mount: HEQ5,  Telescopes: SW ED120 Pro and SW Evostar ED80 pro, WO ZS71 APO,  SW130PDS
Cameras: Modified Canon EOS 1100D, Atik 460EX, Atik314, DMK21, DBK21, Dual rig options. Observatory: SkyPOD & PZT
https://sites.google.com/site/caroleastroimaging/home

 

ukbuysellRemote Imaging from AustraliaSharpSkyblank APTUKAI on Facebook
Powered by SMF 2.0.15 | SMF © 2006, Simple Machines LLC
DarkBreak by DzinerStudio. Theme modified by The UKAI Team

Page created in 0.126 seconds with 30 queries.
TinyPortal © 2005-2012