Orpington Astronomical Society

Astronomy => Astrophotography => Topic started by: The Thing on Mar 30, 2022, 16:55:11

Title: M65 M66 NGC3628
Post by: The Thing on Mar 30, 2022, 16:55:11
Second light with my new QHY294PROC. Some of you will know I've had a ZWO ASI294MC Pro for a while and this is pretty much the same. But it isn't as first light used the ASI294 exposure I normally use of 240s and was horribly overexposed! (Both at Unity gain). BTW this is a pretty picture, please ignore the dodgy bits :)

73x120s (2h 26m), Gain 1600, Offset 25, CMOS Temp -5C

Image date, time and location:   2022-03-26, Manche France
Telescope aperture and focal ratio:   TS1506 6" f4 Newtonian, TS GPU Coma Corrector
Camera and filters used:   QHY294PROC, Optolong 2" UV/IR
Processing applied:   PixInsight, Affinity Photo, IrfanView

Click image for larger version
(http://gallery.orpington-astronomy.org.uk/albums/userpics/10050/normal_M65_M_66__NGC3623_QHY294_73x120s_G1600_O25_T-5_PI_Affinity_IV.jpg) (http://gallery.orpington-astronomy.org.uk/albums/userpics/10050/M65_M_66__NGC3623_QHY294_73x120s_G1600_O25_T-5_PI_Affinity_IV.jpg)
Title: Re: M65 M66 NGC3623
Post by: Carole on Mar 30, 2022, 17:09:53
That's a nice result Duncan, especially after 2 1/2 hours.  Can even see a trace of the "tail" on NGC3623

Carole
Title: Re: M65 M66 NGC3628
Post by: The Thing on Mar 30, 2022, 18:08:37
Thanks Carole. It would be better but the scope decollimated while I was messing about with spacings for the new camera.
Title: Re: M65 M66 NGC3628
Post by: RobertM on Mar 30, 2022, 20:20:15
Hey Duncan ! That's a great result from that camera and really good detail in those galaxies.  Yes I know there's a dodgy side (ignored :) ) but it shows the combo has great potential.  The colours look really good as well - I know you've had trouble grappling with that camera in the past.

Keep em coming !

Robert
Title: Re: M65 M66 NGC3628
Post by: The Thing on Mar 30, 2022, 21:05:49
Thanks Robert. I think the main difference is I used the QHY294 Overscan areas to compensate for variable bias levels produced by this CMOS. No colour blobs and presumably more usable data in each sub. You can't do that with the ASI294.
Title: Re: M65 M66 NGC3628
Post by: ApophisAstros on Mar 31, 2022, 07:26:57
Like it Duncan , might try for those myself although i struggle usually to bring out the spirals.
Roger
Title: Re: M65 M66 NGC3628
Post by: Roberto on Mar 31, 2022, 14:53:20
Very nice trio!  Amazing you managed to capture all that in less than 3 hrs  8)

Roberto
Title: Re: M65 M66 NGC3628
Post by: The Thing on Mar 31, 2022, 18:57:20
Thanks Roger and Roberto. The seeing seemed very good as I was getting (for my gear) excellent guiding and that musty have helped with the detail though transparency left a lot to be desired.
Title: Re: M65 M66 NGC3628
Post by: garrick on Apr 05, 2022, 09:22:37
Really nice image. Extremely impressive for only 2.5 hours of data. Hamburger Galaxy is stunning in its detail. The ASI294 is proving to be a great camera. I have the ASI294MM Mono and the results I am getting are very good.

Clear Skies.

GW
Title: Re: M65 M66 NGC3628
Post by: The Thing on Apr 09, 2022, 08:44:10
Quote from: garrick on Apr 05, 2022, 09:22:37
Really nice image. Extremely impressive for only 2.5 hours of data. Hamburger Galaxy is stunning in its detail. The  ASI294 is proving to be a great camera. I have the ASI294MM Mono and the results I am getting are very good.

Clear Skies.

GW
Thanks Garrick.
This was using the QHY294PROC, which seems to produce better images than my ASI294MC Pro, though that might be down to me getting the collimation sorted at last at the same time as the new camera arrived.