附原文:
The Great Globular Cluster in Hercules M13
This is the latest data set I have processed fromGrandMesaObservatory.com
As the moon was almost full it was a logical target for this test. This is
the first time I have used this new QHY168M Mono CMOS camera and also the first time I have used the Optec Gemini Focusing Rotator on the 12" RC.
I'll be doing a review on the Gemini shortly but needless to say it really is a great focuser.
The QHY168M is essentially a QHY168C One Shot Color camera that has been converted to Mono and sent to Grand Mesa Observatory for testing. I'm very impressed with the results so far and It uses a 16 Megapixel, Sony IMX071 APS-C Format sensor 4952x3288 with 4.8um x 4.8um pixels. For the Filter Wheel I am using the QHYCFW2-M with 36mm un mounted Optolong Filters.
Because the camera is a converted OSC it does not have the regular 4 pin
filter wheel connection, instead the connection is made via a single USB
cable directly to the PC using an Ascom RS232 driver, I had some problems
initially with the RS232 driver however the latest driver works very well
except if trying to use in TheSkX. I believe QHYCCD and Bisque are working hard to resolve the driver issues with TheSkyX. I am very impressed with the sensitivity of the camera and for this first test I selected a gain of 4 and offset of 30, the data was calibrated with Bias, Dark and Flat Frames, Pre Processed and combined in Pixinsight, Post Processing in Photoshop CC.
Total Integration Time 2 Hours
Technical Information
Location: GrandMesaobservatory.com, Purdy Mesa, Colorado
Captured May 24th 2018
QHY168M Monochrome COLDMOS cooled to -20C
Size: 4952 x 3288 pixels
Pixel Size: 4.88um x 4.88um
Gain 4, Offset 30
Darks, Bias and Flat Calibration
15 x 120 sec LRGB 1x1
Optics: AstroTech 12" RC @ F6.0, 1800mm FL with Astro-Physics 27TVPH .75
Telecompressor
Focuser: Optec Gemini Focusing Rotator
Paramount ME German Equatorial Mount
Image Acquisition Maxim DL
Pre Processing Pixinsight
Post Processing CC
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