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Messages - bporter315

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QHYCCD Standard Software Q&A / DSO Preset
« on: December 04, 2020, 09:57:52 AM »
I have a QHY247C and recently experienced an issue where I could not get my light frames to calibrate correctly using flats and darks. While doing some investigation I noted that the DSO Preset in the drivers had changed from a previous version. For the QHY247C they were originally set to Gain 2200 and Offset 200 per the camera reference table that can be found here on QHY's website. I understand the values on the table are just a starting point. The preset in the driver after an update however was changed to Gain 1228 and Offset 76. I have run my own sensor analysis for the camera that shows Gain 2200 being the unity value for 1e-/ADU. An Offset of 200 is more than sufficient to move the curve from the left edge of the histogram. This new gain and offset value still provide enough range on the left side of the histogram to prevent clipping the blacks. Are these new values the recommended starting values? Is there some logic for the change in the drivers?

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Astronomical Photography / NGC7380 - Wizard Nebula - QHY247C
« on: November 23, 2020, 05:51:40 AM »
Still having issue with calibration of images using flats and dark-flats. I don't know if it's a problem with the images coming from the camera or what. Even my darks do not seem to want to calibrate out any of the hot pixels. Both flats and darks seem to introduce a terrible gradient that is difficult to work with. I've not had an issue until the last couple of images.

QHY247C w/ IDAS NBX filter
Astro-Tech 8" AT8RC w/ Teleskop 1.0x flattener
ASI178MC and Astromania 60mm for guiding
iOptron CEM40EC mount
Processed in Pixinsight and Photoshop
74x180s lights, 20x darks

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Astronomical Photography / NGC7293 - Helix Nebula - QHY247C
« on: November 21, 2020, 08:47:04 PM »
NGC7293, The Helix Nebula
QHY247C w/ IDAS NBX filter
Astro-Tech 8" AT8RC w/ Teleskop 1.0x flattener
ASI178MC and Astromania 60mm for guiding
iOptron CEM40EC mount
Processed in Pixinsight and Photoshop
48x180s lights, 20x darks

Couldn't get flats to calibrate correctly.

4
Astronomical Photography / NGC891 - QHY247C
« on: November 09, 2020, 12:45:49 PM »
I switched over from my Redcat to my Astro-Tech AT8RC, which is an 8" Ritchey-Chretien telescope. I recently disassembled, cleaned and reassembled it. The star test appeared good, but I think it could use a bit of adjustment. I don't know that it's worth it as the final image is good enough quality for my purposes.

QHY247C
IDAS LPS-D2 filter
Moonlite CSL 2.5" focuser with V3 motor
Astro-Tech AT8RC with Teleskop 1.0x flattener
Astromania 60mm guidescope with ASI178MC
iOptron CEM40EC
39x180s lights, 40x darks, 20x flats and dark flats

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Astronomical Photography / Heart and Soul - QHY247C
« on: November 06, 2020, 06:17:43 PM »
IC1805 and IC1848, Heart and Soul

QHY247C, gain 2200, don't recall offset
IDAS NBX filter
William Optics Redcat
iOptron CEM40EC, unguided
91x180s lights, 20x darks, flats and dark flats
Data captured over three different nights


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QHY247C, gain 2200, do not recall the offset
IDAS NBX filter
William Optics Redcat
iOptron CEM40EC, unguided
40x180s lights, 20x darks, flats and dark flats

7
QHYCCD Standard Software Q&A / Re: Broadcast driver not working
« on: September 25, 2020, 07:18:57 AM »
I installed V2.0.0.0 of the BroadCast driver. I had to do a Google search to find the Native WDM driver on your website, but was only able to locate V1.0.4.2. Neither driver is listed anywhere on your Download page  and don't appear to be included in your All-In-One SDK. I also can't get the Enable Live Broadcast function to work in SharpCap. It causes the program to crash. I am using a QHY247C camera.

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