ASTRO: M46 with NGC 2438 and PK231.4+04.3

Shooting between clouds I managed to get a whopping 55 minutes of usable
data of M46 and NGC 2438 recently (my only finished object in January).
Usually I wouldn't bother to set up the scope for such little reward, but I
wanted to check starshapes of my Esprit150 APO in cold weather. No problems
noticed, somewhat fuzzy stars are mostly due to guiding errors in
declination and bad seeing (stars were twinkling "nicely" in the live view
of the Fuji X-A1 camera I used just for fun). PK231.4+04.3 is the small red
blob above NGC 2438 right at the upper edge of the frame.

Taken from Berlin (SQM-L 18,8) with an Esprit150ED triplet APO plus
unsuitable reducer for 120ED doublet on a G11 mount, guiding via
finderscope, unmodified Fuji X-A1 camera with IDAS LPS P2 filter, 11x5
minutes at ISO 200.

Stefan

That's not a DSLR I've seen used for astro work. It picked up the red in the planetary well. Was it modified or does that camera's IR filter pass Ha or SII whichever that red is due to. Most DSLRs need to be modified to get that. I'm impressed with that camera's performance. What software supports it or you run manually?

In any case its a darn good shot for such a low object. My stars are a lot fuzzier and I'm not as far north as you are.

Rick

Originally Posted by Stefan Lilge

Shooting between clouds I managed to get a whopping 55 minutes of usable
data of M46 and NGC 2438 recently (my only finished object in January).
Usually I wouldn't bother to set up the scope for such little reward, but I
wanted to check starshapes of my Esprit150 APO in cold weather. No problems
noticed, somewhat fuzzy stars are mostly due to guiding errors in
declination and bad seeing (stars were twinkling "nicely" in the live view
of the Fuji X-A1 camera I used just for fun). PK231.4+04.3 is the small red
blob above NGC 2438 right at the upper edge of the frame.

Taken from Berlin (SQM-L 18,8) with an Esprit150ED triplet APO plus
unsuitable reducer for 120ED doublet on a G11 mount, guiding via
finderscope, unmodified Fuji X-A1 camera with IDAS LPS P2 filter, 11x5
minutes at ISO 200.

Stefan