Search found 3952 matches

by admin
Mon Jun 11, 2018 7:34 pm
Forum: Bug Reports
Topic: Polar align cordinates
Replies: 8
Views: 1515

Re: Polar align cordinates

Hi, so as far as I can see there is an issue if you have already used the polar align tool then goto the settings and change them then the new values will not take until a restart - I will fix that. There is also a separate issue where you have to (at least) click on another control in the settings ...
by admin
Mon Jun 11, 2018 6:43 pm
Forum: Live Stacking
Topic: Troubleshooting drift graphs
Replies: 8
Views: 1759

Re: Troubleshooting drift graphs

Hi, just to explain the drift graphs - the left hand graph is showing how far offset each frame in the stack is compared to the first frame - the axis measurements are in pixels and the two axes represent X and Y offset. In the first screenshot it looks like you have had a lot of drift, in the secon...
by admin
Mon Jun 11, 2018 6:29 pm
Forum: Deep Sky Imaging
Topic: Live stacking is showing black image
Replies: 9
Views: 1939

Re: Live stacking is showing black image

Hi Paul, the manual steps for reset are... Delete all files in C:\Users\<your user name>\AppData\Roaming\SharpCap\CaptureProfiles This will clear all capture profiles for all cameras (including autosave). Delete the following registry keys using regedit HKEY_CURRENT_USER\Software\AstroSharp Limited\...
by admin
Mon Jun 11, 2018 5:59 am
Forum: Gallery
Topic: Lagoon Nebula in a 12" Dob
Replies: 6
Views: 1099

Re: Lagoon Nebula in a 12" Dob

That is a super image - well done! Brian - you are working from an incorrect assumption in your calculation. It's not the aperture are that you should be comparing but the f-ratio of the two scopes. If your 71mm scope and Robrj's 12" Dob are both F5 then the photon rate at the sensor and the exposur...
by admin
Mon Jun 11, 2018 5:53 am
Forum: How do I?
Topic: Flat Frames Capture - impact of Dark Frames
Replies: 5
Views: 1002

Re: Flat Frames Capture - impact of Dark Frames

Thanks for the feedback - definitely a good point about the minimum exposure issues - I have seen that issue myself but had forgotten about it in the code for subtracting the bias frames :( Maybe 2 or 5x minimum exposure would be a safer bet. Hope that you continue to enjoy imaging with SharpCap. ch...
by admin
Mon Jun 11, 2018 5:50 am
Forum: QHY Cameras
Topic: Sensor Analysis for QHY168c
Replies: 3
Views: 942

Re: Sensor Analysis for QHY168c

Hi Gene, I put out an update last night that ought to set the white balance values to 1/2 of maximum for your camera - this should let the analysis proceed and then we can compare the results to the known results for that sensor to see if we have found the neutral white balance levels or not. cheers...
by admin
Mon Jun 11, 2018 5:48 am
Forum: Deep Sky Imaging
Topic: Live stacking is showing black image
Replies: 9
Views: 1939

Re: Live stacking is showing black image

Hi,

That's a bit odd! Try changing the stacking type from 'sigma clipping' back to default to see if that helps. Also have a look in the 'log' tab of the Live Stacking UI and the main SharpCap log to see if there are any error/warning messages that might help pin down the cause.

cheers,

Robin
by admin
Mon Jun 11, 2018 5:44 am
Forum: General Discussions
Topic: Sensor analysis wont finish
Replies: 16
Views: 2460

Re: Sensor analysis wont finish

Hi,

actually that update is now available for manual download and install (not on auto-update yet).

cheers,

Robin
by admin
Sun Jun 10, 2018 8:53 pm
Forum: General Discussions
Topic: Evaluation of Sensor Analysis & Smart Histogram
Replies: 7
Views: 1665

Re: Evaluation of Sensor Analysis & Smart Histogram

Just a quick note to remind people what the smart histogram is designed to do... * It works out the exposure time and gain combination (between user specified exposure limits) beyond which it's not worth increasing the exposure further based on calculation of the total noise level in the final stack...
by admin
Sun Jun 10, 2018 8:35 pm
Forum: How do I?
Topic: Flat Frames Capture - impact of Dark Frames
Replies: 5
Views: 1002

Re: Flat Frames Capture - impact of Dark Frames

Hi, my view is that the difference between a true dark (ie a frame taken with no illumination at the same exposure settings as a light frame) and a bias frame ( a frame taken with minimum exposure but otherwise the same settings as a light frame) is negligble in the case of taking flats (ok, I'm ass...