Search found 55 matches
- Mon Apr 15, 2024 11:04 pm
- Forum: QHY Cameras
- Topic: QHY174mGPS wrong exposure interval.
- Replies: 7
- Views: 1393
Re: QHY174mGPS wrong exposure interval.
Hi Jean-Francois, You wrote: The exposure value is not taken if no "Return" is press or when the keyboard "|" is still in the exposure input field. Yes, i have also encountered this. In one case it was set to 100ms, but i changed it to 80ms (or so I thought) but the exposure was ...
- Thu Apr 11, 2024 9:46 am
- Forum: QHY Cameras
- Topic: QHY174mGPS wrong exposure interval.
- Replies: 7
- Views: 1393
Re: QHY174mGPS wrong exposure interval.
Hi Robin,
A possible consequence, is that the exposure was 65ms, but with a delay between frames of 123ms. Is this possible?
Not that it effects the final occultation timing, only the SNR.
Tim
A possible consequence, is that the exposure was 65ms, but with a delay between frames of 123ms. Is this possible?
Not that it effects the final occultation timing, only the SNR.
Tim
- Thu Apr 11, 2024 9:17 am
- Forum: QHY Cameras
- Topic: QHY174mGPS wrong exposure interval.
- Replies: 7
- Views: 1393
Re: QHY174mGPS wrong exposure interval.
Thanks very much Robin for the analysis. A poor USB connection is quite likely ! The connection is USB3 to a USB3 port on the laptop. The cable run doesnt normally create a problem, but i have the original 1.5m cable connected to an "active" (non-powered) 3m USB3 extension. However this is...
- Wed Apr 10, 2024 1:05 pm
- Forum: QHY Cameras
- Topic: QHY174mGPS wrong exposure interval.
- Replies: 7
- Views: 1393
QHY174mGPS wrong exposure interval.
Hi / I recorded an occultation last night (SC 4.1.11786 as ADV bin2x2). The exposure was set to 50ms, i then changed that to 65ms. The Camera log file says 65ms. All well so far, but the adv is recorded with an interval of 0.188s ! At 00:31:00.169227 - The log file also says 639 frames captured at 5...
- Mon Feb 19, 2024 5:57 pm
- Forum: ZWO Cameras
- Topic: ASI174 used for occultations - timeing ?
- Replies: 2
- Views: 366
Re: ASI174 used for occultations - timeing ?
Thank-you Robin
Tim
Tim
- Sun Feb 18, 2024 1:06 pm
- Forum: ZWO Cameras
- Topic: ASI174 used for occultations - timeing ?
- Replies: 2
- Views: 366
ASI174 used for occultations - timeing ?
Hi Robin/All, If i use this camera and Tangra for determining an occultation (mid-frame) time, and i have V 4.1.1x... Do i select "end of frame" time setting in Tangra ? The time stamp is applied by the computer clock in this case. I ask the question because im not sure if the SER time sta...
- Wed Jan 31, 2024 3:02 pm
- Forum: General Discussions
- Topic: Log File housekeeping ?
- Replies: 1
- Views: 360
Log File housekeeping ?
Hi Robin, I dont have many log-files in 2023. The last one was 2023-12-02. My question is whether or not old files are deleted by SharpCap? If so, is there way to increase that time period, or should I copy them by hand? Why you ask? Well It occurred to me that this a record of telescope usage over ...
- Mon Nov 27, 2023 10:02 am
- Forum: Deep Sky Imaging
- Topic: Excessive Star Glow
- Replies: 9
- Views: 7500
Re: Excessive Star Glow
Old lenses will have these aberrations. Its accentuated by high(er) resolution CCDs. You could stop down, and this should sharpen up the image. I see the same problem on Canon-L lenses at full aperture on a 60Da, since they are not corrected for the IR or deep red (e,g Ha). So I take extra care with...
- Thu Mar 23, 2023 12:40 pm
- Forum: General Discussions
- Topic: What's the difference between polar alignment and plate solving?
- Replies: 6
- Views: 1176
Re: What's the difference between polar alignment and plate solving?
Hi Alexw, Sorry, I miss-informed you about sharpcap not using plate solve in the polar axis routine. Thanks for the clarification/reminder Robin! Alexw replied to me (i think) : "So you're saying tracking during an exposure DOESN'T use plate solving, it just bumps your axis based on the displac...
- Wed Mar 22, 2023 11:34 am
- Forum: General Discussions
- Topic: What's the difference between polar alignment and plate solving?
- Replies: 6
- Views: 1176
Re: What's the difference between polar alignment and plate solving?
Hi Alex, The polar axis alignment is fixed at the time you set up the mount. This is not always exact. SharpCap has a tool that enables you adjust the mount by using a camera on the finder. This is partly manual and doesn't use any plate solving. Its a physical adjustment. I check the polar alignmen...