That is not possible. All (hundreds) comparison stars are selected automatically and by using their known magnitude, the absolute magnitudes of the variable and check star are calculated. This is different approach then older programs using differential measurements. But the check star magnitude makes it transparent. The check star could be used for any correction later
Ciao Hank, i am in trouble, i am following your procedure with astap, ritchey cretienne plus qhy 284 mono. all go ok till refresh astrometric solutions ... no solution found for each immage. usinng star database H18 ... i have installed all data base. i tried also with the sharpcap autostakked and calibrate immage .. nothing .. what can be the problem ? thanks in advance ... 22:12:31 Using star database H18 22:12:31 Creating grayscale x 2 binning image for solving/star alignment. 22:12:31 220 stars, 169 quads selected in the image. 149 database stars, 114 database quads required for the square search field of 3.2°. Search window at 100% based on the number of quads. Step size at 100% of image height 22:12:31 No solution found! :( 22:12:31 D:\ASTRONOMIA PICS AND SOFTWARE\SHARPCAP PROJECT RITCKEY CRETIENNE\2022-06-20\NGC5962\Light\01_10_06 awframes\frame_00130_cal.fitUncheck, no astrometric solution found for this file. Can't measure magnitude! 22:12:31 Ready
In most cases it is the wrong "field of view" or Ra, DEC position. Try to solve one image "field of view(height)" in auto and "radius search area"=180. If that doesn't work, send my a link to one image. E.g upload to ufile.io and send me the link.
Great video! Thanks for the step by step. I can't get ASTAP to annotate the stars in my image. It solves, but there's no block to "Annotate variables". Possibly I'm using a newer version than you used when you made this video.
@@hank3327 Trying to turn them on, but Nevermind. They were there, just very small. I didn't realize it. I had to zoom way in to see them. However, they didn't look like yours. Each star just had a three digit number rather than an annotation with its catalog number It plate solved just fine though. Thanks. I'm definitely using a different version, b/c my screens are slightly different than yours.
@@cmahar3 The three digit number is the magnitude. So 125 means magnitude 12.5. The program is further developed so it look a little different now. You can get star designations with one line requests. Select an area with the right mouse button down and then select in the popup menu option "online query"
@@hk4197 If one wishes to use ASTAP to stack subframes, how could the analysis that was presented here help? Where in the stacking process to include that analysis, and what needs to be tweaked in that process according to the results of the photometric analysis?
@@f3f022 To discover other objects in the image. Interlopers such as asteroids, comets, for instance that would not be readily apparent. A nifty way to 'data mine' the image.
Excelent video, thank you very much. Seems ASTAP is a very good program to work on variables.
Thank you very much. I just used this guide to measure the new Supernova that appeared in M101 a week ago ... I get a Magn. median of 11,24
Great demonstration. Thank you!
Variable star data is available at: www.aavso.org/vsx/index.php?view=detail.top&oid=5572
Thank you very much! How to create graph in Excel?
Thank you! How to enter the brightness of a comparison star manually?
That is not possible. All (hundreds) comparison stars are selected automatically and by using their known magnitude, the absolute magnitudes of the variable and check star are calculated. This is different approach then older programs using differential measurements. But the check star magnitude makes it transparent. The check star could be used for any correction later
Hello, any chance you could show us how to use the new ccdinspector feature to measure for sensor curvature/tilt ? :) Great job btw!
Excelent programma :) erg blij mee.
Ciao Hank, i am in trouble, i am following your procedure with astap, ritchey cretienne plus qhy 284 mono. all go ok till refresh astrometric solutions ... no solution found for each immage. usinng star database H18 ... i have installed all data base. i tried also with the sharpcap autostakked and calibrate immage .. nothing .. what can be the problem ? thanks in advance ... 22:12:31 Using star database H18
22:12:31 Creating grayscale x 2 binning image for solving/star alignment.
22:12:31 220 stars, 169 quads selected in the image. 149 database stars, 114 database quads required for the square search field of 3.2°. Search window at 100% based on the number of quads. Step size at 100% of image height
22:12:31 No solution found! :(
22:12:31 D:\ASTRONOMIA PICS AND SOFTWARE\SHARPCAP PROJECT RITCKEY CRETIENNE\2022-06-20\NGC5962\Light\01_10_06
awframes\frame_00130_cal.fitUncheck, no astrometric solution found for this file. Can't measure magnitude!
22:12:31 Ready
In most cases it is the wrong "field of view" or Ra, DEC position. Try to solve one image "field of view(height)" in auto and "radius search area"=180. If that doesn't work, send my a link to one image. E.g upload to ufile.io and send me the link.
Great video! Thanks for the step by step. I can't get ASTAP to annotate the stars in my image. It solves, but there's no block to "Annotate variables". Possibly I'm using a newer version than you used when you made this video.
Hi Chris, can you clarify? Do want to switch off the annotations or to switch them on?
Annotation of stars should work as soon you have solved an image. Viewer menu TOOLS, STAR (DATABASE) ANNOTATION
@@hank3327 Trying to turn them on, but Nevermind. They were there, just very small. I didn't realize it. I had to zoom way in to see them. However, they didn't look like yours. Each star just had a three digit number rather than an annotation with its catalog number It plate solved just fine though. Thanks. I'm definitely using a different version, b/c my screens are slightly different than yours.
@@cmahar3 The three digit number is the magnitude. So 125 means magnitude 12.5. The program is further developed so it look a little different now. You can get star designations with one line requests. Select an area with the right mouse button down and then select in the popup menu option "online query"
@@hank3327 Wowza! Cool. That worked. Thanks so much. So much to learn.
Considering that the aim is to ideally stack subframes with ASTAP, what is this analysis for and how it will help?
?? Can you clarify what your question is?
@@hk4197 If one wishes to use ASTAP to stack subframes, how could the analysis that was presented here help? Where in the stacking process to include that analysis, and what needs to be tweaked in that process according to the results of the photometric analysis?
@@f3f022 To discover other objects in the image. Interlopers such as asteroids, comets, for instance that would not be readily apparent. A nifty way to 'data mine' the image.
Good video.