Gary Clayton

The focuser seems to be well made and I have no discernable play in mine, you can adjust it via the set screws around the tube and under the focus knobs if you need to.

Rosette nebula from last night, best 50 x 5 minute subs 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

Not to sure how to move to the correct one

California nebula, taken last night at just over 3 hours total integration time and a tad soft due to the high wispy clouds. 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

Hi Ian I have been using a very small and low power BeeLink Gemini M with 8 gigs of ram for the last few years, it also runs on 12 volts and has windows 10 installed. So you don't need anything powerful to run a full imaging setup and the one you have linked too will work just fine for years to come. Gary

Thank you Ian, I use the default settings for the camera with a gain of 100 and I use 200 for the offset with 5 minute subs, but this will vary depending on your local conditions.

The Flame nebula taken last night, 98 X 5 minute subs for a total integration time of 8.1 hours. 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

Heart and Fish Head nebulas taken last night, just 3 hours worth of data

Taken with my Hypercam 26C, Antlia ALP-T dual band 5nm filter and my new StellaMira 90mm with 0.8 reducer, it' just 2.9 hours worth of data thanks to the weather.

I managed to get 2.9 hours worth of data last night on the Horsehead and Flame nebula, shot in narrowband.

Yes that would work.

It certainly looks like tilt, but check your focuser for any flex/play

Soul nebula for me, OSC processed as HOO and around 8 hours from bortle 4 skies.

I concur, they look the same as my darks, apart from your offset.

I get a slight improvement using the default settings in both stars and background, so I will purchasing it once the 30 day trial runs out.

High light pollution using a OSC is a hard nut to crack, I am lucky in that respect at bortle 3/4 ish if my neighbour turns his outside light off as there are no street lights in my village.

As you say the main change seems to be in your stars, I think that this down to the low signal to noise ratio in your images and it looks like longer integration time is needed, I have had good results with my own images using this tool.

It's been extremely cold the last few night's, iced up maybe, -10C here in North Yorkshire

The Soul Nebula (Westerhout 5, Sharpless 2-199, LBN667) is a large emission nebula located in the constellation Cassiopeia, 96 x 5 minute subs for a total integration time of 8 hours taken last night in the HOO palette. Drizzled in Astro Pixel Processor then finished in PixInsight StellaMira 90 with 0.8 reducer/flattener Antlia golden dual band 5nm filter Altair Astro Hypercam 26C Camera Ioptron CEM40G equatorial mount

I seem to be having issues with elongated stars using an APS-C size sensor with this scope and it's 0.8 reducer, I have run the aberration inspector in NINA and tweaked my sensors tilt as best I could, even ASTAP says that I am down to 4% yet it seems to me that I am to close in one corner and two far away in the others or am I expecting to much?.

As the others have said it's a great device which is very easy to use and tweak, I reduced my camera tilt from 68% down to 3% within 30 minutes so it's well recommended.

I would like to use my SM90 at its native focal length but with a FF that screws onto the scopes M63 focuser thread as the deadicated SM 0.8 reducer does, can anybody recommend one

As the moon is out tonight try focusing on that first, if you don't have any luck it could be that the camera is not at your scopes focal plane and more spacers could be required to get there.

Are you using the native or the ASCOM driver, try swapping them to eliminate driver issue.

I used to use the ZWO 533MC pro but when it became time to upgrade it was a no brainer for me due to the price difference between the 2600MC PRO and the 26C PRO cameras, with that and the good reviews online I made the jump to the 26C Pro and I am very happy that I did, you get great support from Altair plus both native and ASCOM drivers. So i can't think of any downside unless you are using the ASIAIR PRO to control you imaging rig.