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Another test shot for brand new lens (same night as other tests of the same lens).
Again, main stars and their colors are not distinct enough.
Gear: Olympus E-PL6 with Panasonic 25mm/1.7 at F/2.5 on poorly-tracked panoramic head and static tripod
Capture: 16 lights x 10s x 1600 ISO, master bias
Site: deep country 26km from Limoges, France
Sky: good (not measured, usually SQM around 21.4)
Processing: Regim 3.4, Fotoxx 12.01+
NGC 1528 at 150x
Spent just under 45 minutes at the eyepiece, so ran up against the issue of field rotation (really for first time in my limited sketching experience) and realized the importance of not only anchoring features to certain areas within the eyepiece, but also (and probably more importantly) using the relative locations between 3 and 4 stars at a time to make as accurate a sketch as possible.
The double cluster up and close. This is almost as it's framed by my camera. Only stacking edges were trimmed.
Imaged during a full moon on December 4.
Scope: SW 150PDS (750 mm fl) on a SW AZ EQ6, unguided
Camera: ZWO ASI174MM-cool at -30 C and gain = 0
R: 55 x 30 s G: 54 x 30 s B: 62 x 30 s (Total integration time: 85 minutes)
Processed in PixInsight.
The Double Cluster consists mostly of blue-white super giant stars. The older red stars looked unnatural when I tried to use more colour saturation, so I kept processing to a minimum. No star reduction, but deconvolution to make the stars "pop" a little more.
(click to enlarge)
I took these images on Sat 25th Nov from here in W Oxfordshire. I've got the widefield setup running now using a RPi3 running KStars and Ekos. This controls a modded, uncooled 350d (with Baader filter) and a serial shutter cable, an Arduino motor focuser (as a Moonlite compatible focuser) and the Losmandy GM8 it all sits on.
Images were taken through a Canon 85mm f1.8 EF lens at f4.5, exposures were 45 x 300sec (3h45m total) at ISO400 through an IDAS P2 filter. The field is a whisker over 15x10 degrees. Processing was in PixInsight and a bit of work in Photoshop to reduce a bit of amp glow that didn't calibrate out fully.
Fairly pleased with this (though the Heart and Soul have come out maybe a little red - the colour calibration uses PI's PCC tool, and the IDAS filter might throw it a bit), but there's some other areas of interest coming through in the image. Annotated image attached but there are a few other bits that PI doesn't grab - there's a small area of reflection nebula (LBN 142.14+01.97) to the left of Sh2-202 that's just coming through. Also, unlabelled are Stock 2 (between the Heart and the Double Cluster) and for the interested clouded out astronomer, galaxies Maffei 1 and 2 are visible in frame just below the Heart (labelled as Sh2-191 and Sh2-197).
Thanks for taking a look!