NGC4565 with QSI583 camera

Gilles Cohen image:
NGC4565, AP155EDF with flattener, QSI583 at 0.99" per pixel, poor seeing, 2.5 to 3.2 pixels...mag 3.5 sky. 24x5 minutes with Baader L filter.

Attached Image:

Roland, Gilles
That is a mighty nice image! Its really hard to see the evidence of the poor seeing. I realize the image is downsampled a bit, but the smallest stars in the image seem to have a 1-1.5 fwhm. Did you compensate with a bit of a minimum filter?

Your AP155 scopes routinely produce some of the finest images you see on the net.
You really got it right with that one.

Greg.

Gorgeous!

Love the dust lanes detail... great shot!

I love the shot, Roland. I was inspired to try it myself.

NGC4565 captured April 21, 2010 from Oakland, CA
NELM 2.9 (street lights and first quarter moon); Seeing 6/10 (Pickering)
Astro-Physics EDFS 130 @ f/6; Astro-Physics Mach1 GTO; FLI ML-8300 camera
120 minutes luminosity;Dark and flat frame subtraction

It's not as nice as Gilles' image, but I was pleased I came as close as I did. I get something like 1.3" per pixel with my combination. Can't wait to see what is possible on a good night from dark skies!

Attached Image:

All very cool shots (including Jared's). Amazing resolution from the 8300 chip.

Am I seeing two kinds of microlens artifacts? I've noticed from images taken with the 8300 chips that the brighter stars are displaying what look almost like diffraction spikes from reflectors, when the images are taken by refractors. Do these chips have a 2-axis microlens artifact (vs. the 3200ME's vertical microlens artifact)?

Just curious, and not meant to detract from these fantastic images.

Eric