M15 with bad collimation :-/ (Roland Roberts)

Celestial hemisphere: Northern · Constellation: Pegasus (Peg) · Contains: M 15 · NGC 7078 · PK065-27.1 · PK065-27.2

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M15 with bad collimation :-/

Link: https://astrofoto.org/2021/09/14/m15-with-bad-collimation/

Powered byPixInsight

M15 with bad collimation :-/

Link: https://astrofoto.org/2021/09/14/m15-with-bad-collimation/

So...a while back I dropped my AstroTech RC6. That was a very sad day. It landed partially on the USB plug for the filter wheel which destroyed the jack. I had to desolder the jack and solder in a new one (which now works again, yay!). But the scope itself took a hit and was badly out of collimation. I did both a daytime collimation and a visual check with an eyepiece but was never very happy with it. I finally reassembled everything to try imaging and this is what I've got.

I imaged at 1x1 binning, but the image is downsampled to 4x4 (25% of the original). Given my crappy seeing here in Brooklyn, that's probably okay anyway. And given the crappy seeing, I'm not sure that being collimated would matter much for this image anyway. But I'm pretty sure at least part of the fuzziness here is collimation. I'll be taking it apart to have another go at fixing that.

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Status	Advanced success
Started	...
Astrometry.net job	5006351
PixInsight job	P7UU217NKV7PISAH8TSBGUN27XHREVN8
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	21h30m00s.95
RA (top/left)	21h28m55s.86
RA (top/right)	21h28m59s.99
RA (bottom/right)	21h31m05s.74
RA (bottom/left)	21h31m02s.14

Dec (center)	+12°08′42″.10
Dec (top/left)	+12°29′01″.8
Dec (top/right)	+11°47′40″.0
Dec (bottom/right)	+11°48′24″.0
Dec (bottom/left)	+12°29′44″.5

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M15 with bad collimation :-/

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M15 with bad collimation :-/

M15 with bad collimation :-/

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