Gary Clayton

I agree with you on both counts, being very picky here but a tad less noise reduction would bring out more detail on what's already a very nice image.

15 minutes ago, Spaced Out said:

Just wondering if the WO rotator did anything to improve your tilt situation at all ? I've got some minor tilt that I suspect might be coming from the rotator.  

 

Yes the WO version has no tilt at all that I can perceive even with the locking screw loose, there are also small adjustment screws all the way around the rotator for adjustment if you deem it necessary. I am looking forward to the next clear night to test it out and do a final tilt adjust on my camera "APS-C size sensor" now that I have some consistency.

9 minutes ago, Anthonyexmouth said:

Really? Are you using up the whole 55mm already? The mini is only 11.5mm thick. 

Yep, I have a Gerd Neumann Camera Tilting Unit in front of my filter tray and I have found my back focus to be bang on at 56mm, taking filter width into account.

13 minutes ago, Anthonyexmouth said:

Such a missed step not having a graduated one on the SM90 to start with. Now do I buy one of these or save for a field rotator. 

I would have to purchase the larger M63 motorised version and install it in front my field flattener/reducer due to my back focus constraints, so this manual one will do for now. 

Just a heads up guys to let you know that the William Optics camera Rotator fits and works on the SM90's focus tube, it's about 5 mm thinner than the SM90 version which is easily compensated for with the available focus tube travel.

25 minutes ago, Anthonyexmouth said:

Does the SM one unscrew off the draw tube? Be awesome if it did. Although its not a cheap mod to get a scale. 

Yes it does unscrew leaving an M63 thread on the end of the focus tube, mine has some play in it causing camera tilt when repositioning the camera for better composition of the target. It's something that I had not noticed until imaging more than one target per night.

52 minutes ago, Anthonyexmouth said:

Anyone here seen or been brave enough to try one of these? I really want a field rotator but over £500 for the Pegasus one is too much for me. 

https://www.aliexpress.com/item/1005004705633634.html?spm=a2g0o.ppclist.product.78.4b81kLYvkLYvdG&pdp_npi=2%40dis!GBP!￡338.06!￡338.06!!!!!%40211b5e2116747406742707009ea7cc!12000030169878280!btf&_t=pvid:4143ff46-302d-4273-9778-a9c57edbc1e2&afTraceInfo=1005004705633634__pc__pcBridgePPC__xxxxxx__1674740674

I bet by the time you have paid any import duty, etc that there's not that much in it price wise and it also depends on how good it is regarding any camera tilt, etc. I will have a look for any reviews online as this is something that I am interested in myself.

1 hour ago, Anthonyexmouth said:

I just wish field rotators weren't so expensive, would make my SM90 setup perfect with one of those. 

Yes a motorised one would be nice, I am thinking about replacing the manual one that it came with for the William optics M63 version, has anybody tried it?. 

https://www.firstlightoptics.com/williams-optics-focusers/william-optics-camera-angle-rotator-for-25-m63-focuser.html

Tadpoles and Spider nebula in the Foraxx palette, 4.8 hours total integration time and taken last night.
Stacked and drizzled in Astro Pixel Processor then finished in PixInsight (Foraxx  palette)

After a few minor issues this scope is turning into a great imaging rig with a APS-C size sensor and it certainly collects a lot more of those ancient photons than my 70mm,  quite surprised at the difference between the two. 

Tadpoles and Spider nebula in the Foraxx palette, 4.8 hours total integration time and taken last night.
Stacked and drizzled in Astro Pixel Processor then finished in PixInsight (Foraxx  palette)
StellaMira 90 with 0.8 reducer/flattener
Antlia golden dual band 5nm filter
Altair Astro Hypercam 26C Camera
Ioptron CEM40G equatorial mount

Lovely image, I think the seeing the last few nights has been poor, resulting in slightly higher guide numbers than usually.

30 minutes ago, peonic said:

Hey Gary,

 

Yes and no - there's a version with an optional adapter for the FLT-91 - https://www.firstlightoptics.com/reducersflatteners/william-optics-adjustable-flat6a-iii-08x-reducer-flattener-for-flt91.html - but other than the adapter it's the same reducer.

 

Chris

I would hazard a guess then that it's just a backfocus issue

Is this the version you have?, it does not mention your scope https://www.firstlightoptics.com/reducersflatteners/william-optics-adjustable-flat6a-iii-08x-reducer-flattener.html

The Orion Nebula (also known as Messier 42), just 20 x 5 minutes subs totaling 1.6 total exposure time
Stacked and drizzled in Astro Pixel Processor then finished in PixInsight (Foraxx  palette)
StellaMira 90 with 0.8 reducer/flattener
Antlia golden dual band 5nm filter
Altair Astro Hypercam 26C Camera
Ioptron CEM40G equatorial mount

Lovely image 👏

The Cone Nebula and Fox Fur Nebula surround NGC 2264, 4.4 hours total exposure time.

Stacked and drizzled in Astro Pixel Processor then finished in PixInsight (Foraxx  palette)
StellaMira 90 with 0.8 reducer/flattener
Antlia golden dual band 5nm filter
Altair Astro Hypercam 26C Camera
Ioptron CEM40G equatorial mount

The settings that I use won't apply to your camera and I also use Nina as my capture acquisition software, as such the gain settings are different to Sharpcap's settings. I am using gain 100, offset 200 with 5 minute subs. Your histogram looks about right to me maybe move the peak to the right slightly by increasing your offset/black levels bit, hope this helps.

IC 443 (also known as the Jellyfish Nebula and Sharpless 248 (Sh2-248)) is a galactic supernova remnant (SNR) in the constellation Gemini, 8 hours total exposure time and taken last night.
Stacked and drizzled in Astro Pixel Processor then finished in PixInsight (Foraxx  palette)
StellaMira 90 with 0.8 reducer/flattener
Antlia golden dual band 5nm filter
Altair Astro Hypercam 26C Camera
Ioptron CEM40G equatorial mount

Nice first narrowband image

Very nice, this is something that I will have to look into doing myself.

NGC 7822 in the Foraxx palette, 97 x 5 minute subs for a total integration time of just over 8 hours and taken last night.

Stacked/Drizzled in Astro Pixel Processor then finished in PixInsight (Foraxx  palette)
StellaMira 90 with 0.8 reducer/flattener
Antlia golden dual band 5nm filter
Altair Astro Hypercam 26C Camera
Ioptron CEM40G equatorial mount

I agree it does look like pinched optics, try turning up your dew heater as it's very could overnight at the moment.

Lovely image

Looks good as is!.

18 minutes ago, teoria_del_big_bang said:

Very nice, bring on some more clear nights I say 🙂 

Steve

Already setup for this evening's astro adventure 🙂