I took this with two different set ups, as I wanted to try out my new (2nd hand) Atik428EX which I bought to replace my Atik314L as it has better resolution. So this is first light for the camera, and a test to see if I was happy with it.
The first image is taken with Atik428EX/ED80
HEQ5
Ha 10 x 600
Oiii 19 x 300 binned
Total time 3h 15m
(plus added RGB stars from my other camera).
(https://cdn.astrobin.com/thumbs/OS8UQmY_0O21_1824x0_wmhqkGbg.jpg)
2nd image is a larger FOV as I was set up so as to be able to do small targets with one camera and large targets with the other. So a dual rig which did not match.
Atik460EX & WOZS71 on HEQ5
Ha 12 x 600
Oiii 7 x 300 binned x 2
RGB stars 4 x 150 Binned x 2
Total 3h 25mins
(https://cdn.astrobin.com/thumbs/gQGQsbA6ay3r_1824x0_wmhqkGbg.jpg)
I would say they are both excellent. The first image is a little soft. I take it these are from your back garden?
Thanks Duncan, I'd never be able to get the Oiii bubble from Bromley. No taken at Cairds. I think I over did star reduction. Have amended the first image.
Carole
Finally, the combined data from both cameras:
Combined image from both cameras.
Total of 6h 40mins
Atik428EX/ED80
Atik460EX/WOZS71
HEQ5
Total Ha 22 x 600
Oiii 19 x 300 binned x 2
Oiii 9 x 600
RGB stars 4 x 150 binned (each filter)
(https://cdn.astrobin.com/thumbs/lQ2vBmhd0rjG_1824x0_wmhqkGbg.jpg)
Nice images Carole - When you are talking about resolution do you mean size of pixels or the number. TBH I have been comparing your image with one I took of same subject with same scope ED80 from Bromley with your old Atik 314L (which I love) & I can't see much difference in what has been recorded (i.e the fine details/ number of stars etc.). Granted yours is in colour & much wider FOV with background dust showing. Great images though.
John
Thanks John.
Don't ask me about pixel sizes etc etc, I have been burying my head in the sand for years when it comes to this sort of thing, but I am just going by some calculations that Roy and Noel did for me recently and found that the Atik314L is undersampling on two of my scopes. This also concurs with a chart that Atik have on their website.
Also I have been getting VERY blobby Luminance stars on the Atik314L on the W0ZS71 and I can only presume this is the reason why.
See below where I have worked out the Atik314L/focal length - and see the Atik428EX is up nearer the top with my Atik460EX.
(https://cdn.astrobin.com/thumbs/Rmwk01nPfGC5_1824x0_wmhqkGbg.jpg)
Very nice result!
Mark
Thank you Mark
Carole
Well done Carole - that is so good.
You've picked up a whole load of background nebulosity too.
Outstanding processing as well as shooting.
Noel
Thanks Noel. I am going to E mail you about YOUR crescent.
Carole
Thks for that Carole - OK explains why I'm happy with 314L images & ED80 - just falls in acceptable range according to chart. Cheers, John