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Michael - Yes, it's wise to do that unless it cause you to under sample. My PlaneWave scope has a focal length of 2563 mm, so the 3.76 micron pixels on the 6200 each subtend 0.3 arc sec. I figure typical seeing at DSNM is 1.5 - 2.5 arc sec. By binning 2x2 I reduce my resolution to 0.6 arc sec. That's good sampling for 1.8 arc sec seeing or greater (min 3 samples per object point spread function).
On 12/08/2020 8:42 PM Michael Gratiot <mikethetechgeek@...> wrote:
The Astro Imaging Channel just had a presentation with an individual who is using the ASI6200 and he talked about binning 2x2 to reduce the file size.
On Tue, Dec 8, 2020 at 9:26 PM Dan Crowson <
Yes… filesizes… And I’ve heard they can be hard to get square with such a large chip. I’m not going to even mention the cost of filters (Chroma’s went up something like 70% or more overnight).
I’m assuming the CMOS camera doesn’t do on chip binning. I think these all do it in the driver. Are you doing it there or in processing after the fact? I’m guessing the drive would allow for creating smaller files right away versus loading each 120MB into a stacking program.
I’m debating on a 6200 or the 2600 when the mono is available.
Dan - Yes, it is a great camera. High bit depth, large full-well, low noise, small pixels. Only problem is large file sizes (120 MB). I've ordered the color version to try on the CDK14 - even with OSC operation I will not be under sampling (1x1 binning).
Happy with the 6200M?
After many months of Covid and other problems with Software Bisque, and with Al Acker's help, I finally got one telescope working in Building 2, where I'm partnering with Tally O'Donnell. It is a PlaneWave CDK14 on an ME II mount, sitting side-by-side with an Officina RH 350 AT that still has alignment issues. Here's one of my first images with the PW - LRGB using six 600-sec unguided subs for each filter and binning 2x2 on a ZWO ASI 6200M camera. The scope still needs collimation tweaks, but I'm taking data anyway and hope to post more soon. Seeing and SQM reading are so much better at DSNM than where I live (near Boulder, CO), that I can't help but be excited for imaging endeavors with all of you in New Mexico.
P.S. Sorry about sending the first incomplete email - fat fingers!