orionoffelt

Nice capture 👍

Thanks it turned out a better target than I first thought maybe I can add some more data to it if the skies ever clear ?

I managed to get a bit of imaging time on Tuesday night and went for this group of galaxies Holmberg 124 in Ursa Major I would have liked a bit more data but the clouds rolled in.

Luminance of 33 x 300 and RGB of 5 x 300 each all binned 2 x 2 

Celestron 11" scope with a F 6.3 reducer

QHY9m camera

Bob

I was out imaging tonight and tried out the lens again I noticed before hand that the lens had a HOYA HMC UV  filter on the front of the lens which i removed and the frames from tonight were perfect so that has been my problem i bought the lens second hand and did not notice the UV filter. Thanks for the help .

Bob

Hi Sean

Thanks for the comments. I have had the QHY8 Pro since 2010 when I moved from a DSLR to a ccd I have found it a great camera I use it at -18 C and use the QHY driver at 1 - 140 hope that’s useful info.

I used no filters and the adaptor is a one supplied by Modern astronomy which gives a good level fit between camera and lens.

Hi Typo

Thanks for the feed back. Your image shows a lot less aberrations with me just trying the lens out to get focus I had to turn the setting from infinity to further down F settings on the lens I wonder if another spacer ring were to be added it would then enable me to get closer to the infinity mark on the lens when achieving focus and this may give me less aberrations ?

Bob

Thanks for the reply I thought it looked like coma spherical abbreviation myself this was the full frame I did manage one more frame a 300 second one but half of it was through cloud and the bright stars looked the same. 

I have a Canon DSLR I may try the lens on it and see what the stars look like as the ccd may have a different result but they are still OSC cameras. With the lens attached to the DSLR during the day the view looks perfect which I would have expected as day time imaging is more forgiving.

I have been imaging for a few years now mainly with telelscopes But I bought a canon 200mm F 2.8 lens a while back and have managed to try it last night for a spell just before the clouds rolled in I coupled it up to my old OSC  a QHY8 Pro and find looking at this image of 2 x 60 frames that the brighter stars have flares has anyone come across this before and I wonder what is causing it and is there a solution ?

Bob

This entire field is Permeated by integrated flux nebula. I can see some of it but I think I need more time on this target if the skies clear.

Imaged on 12-0-1-2021 

Luminance of 24 x 300

RGB of 4 x 300 each

All binned 2 x 2

scope Celestron 11" at F 6.3

camera QHY9m

Bob 

It certainly surprised me Lee to see Arp 6 in the frame as I thought there was not much to see in that area.

Bob

Thanks Paul

I like the dark dust clouds in this target they seem to be prominent.

Bob 

After some modifications to my set up I decided to test the gear out by imaging IC 2233 which is a edge on spiral galaxy one of the flattest known. So after a while I slewed to the star Castor to re focus  then slewed back while centering the target I noticed an artifact on the right of the image but checking up it was a small irregular dwarf Galaxy NGC 2537 ( Arp 6 )  so I set the frame up to include them both in the FOV this is a LRGB image.

Imaged over two nights 06/08-01-2021

Luminance of 7 x 600 un binned and 8 x 300 binned 2 x 2

RGB of 8 x 300 each binned 2 x 2

scope Celestron 11" at F 6.3

camera QHY9m

Bob

Imaged over two nights 12-02-20 / 06-01-21

Luminance of 15 x 600 un binned

RGB of 4 x 300 each binned 2 x 2

WO 90 scope

QHY9m camera

Bob

Imaged on 20-12-2020 and I have added some old data from 2018 as I have not had very many clear nights this year to give a final LRGB image

Luminance of 22 x 300 and 15 x 600 un binned

RGB of 6 x 300 each binned 2 x 2

scope WO 90

camera QHY9m

Bob

Very nice 👍

This was imaged over two nights 21 / 22 - 11- 2020 I had problems with the guiding as it was windy at times but I have made it into a LRGB image of 31 x 300 of Luminance  and 5 x 300 each of RGB all binned 2 x 2

Celestron 11 " scope with a F 6.3 reducer on and a QHY9m camera

Bob

Thanks Mark maybe it would have been a bit better with no filter.

Bob

Thanks Martin for the feed back It is a long time since I used this filter my thinking was that this target would end up over a street light so I give it a try but I agree it looks like a bad choice I will try to get some unfiltered data when I can if I remember correctly this filter worked well on nebula gassy objects you have to experiment at times.

Bob 

Imaged on 19-11-2020 I would of liked more data as the image is still a bit noisy but the way the weather has been I was lucky to get this.

Luminance of 22 x 300 with a UHC-S filter

RGB of 5 x 300 each

all binned 2 x 2

Celestron 11" scope at F 6.3

QHY9m camera

Bob

I imaged this target over two nights 25-10-20 / 03-11-20 with RGB of 7 x 300 each binned 2 x 2

and Ha of 9 x 600 + 9 x 900 binned 2 x 2

I went for 10 minute subs of Ha first then 900 subs to see if the bit longer subs went deeper I thought they did so I think I will still go for longer subs where possible I combined both lots of Ha data.

WO 90 scope

QHY9m camera

Bob

Thanks Olly it’s not a spectacular target but I also liked the stars.

Bob

I was pleased to get out imaging on Friday night the opportunities of late have been limited. This is a image of two Sharpless targets Sh2 152 / 153 imaged over two nights 08 / 23 10 -20 

Ha of 9 x 900  and RGB of 8 x 300 each all binned 2 x 2

WO 90 scope and QHY9m camera

Bob 

Imaged over two nights 31-08-20 / 06-10-20

Ha of 13 x 900

Olll of 7 x 900

Sll of 6 x 900

all binned 2 x 2

WO 90 scope

QHY9m camera

Imaged over two nights 13/17-09-2020 

Luminance of 16 x 600 un binned

RGB of 7 x 300 each binned 2 x 2

WO 90 scope

QHY9m camera

Imaged over two nights 19/20-04-20

Luminance of 24 x 300

RGB of 6 x 300 each

All binned 2 x 2

11" Celestron F 6.3

QHY9m camera

Bob

I thought them worth having a go at interesting group.

Bob