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INDI Library v1.9.6 Released (21 May 2022)

Bi-monthly INDI Library released with new drivers and bug fixes.

How to center exactly between two objects?

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  • Thank you received: 68
Hello,
I asked about this more than a year ago, got some advise but still didn't have a clear understanding.
It was suggested to use Scheduler but I was not good with it as I only tried it once...
Flags didn't work.

So, I want to shoot Sh2-308 (Dolphin Head) and Sh2-303 and want the frame to be centered exactly in between them.
How do I do this? There's no star there in KStars to center on.
Actually, with the same settings/catalogues there are much more stars in Windows KStars than in RPI KStars for some reason.
In Windows I can center properly. In RPI there is only one star between the objects but it's quite a bit off center.
I will be shooting in a remote dark location with everything running on RPI.
Any help will be greatly appreciated - thanks!
Max S.

RPI 4 B (4Gb) with SMate
Askar FRA400, TPO RC6, Nikon D5500 full spectrum (with IDAS D1 clip-in filter).
ASI2600MC Pro
ZWO ASI120MM Mini on ZWO 30F4
ZWO ASI224MC-S on Orion 50 mm f/3.2
ZWO EAF x 2
SW AZ-GTi
SW HEQ5
RST-135
iOptron CEM40G
5 months 4 days ago #80179

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I usually via Kstar select the point with my mouse and slew the telescope from there. It appears to work well for me and always plate solves where I want.
Malcolm
Telskop Service TS80 480mm APO FL53 Glass
Canon 450D DSLR
ASI120MM Guide camera.
HEQ5 Pro
TIC Focuser NG
Raspberry Pi 4 8GB with Astroberry
5 months 4 days ago #80183

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First center your framing in kstars main window. Then create job in sheduler and use that cross button next to J2000 coordinates which "Fills coordinates with SkyMap center"
5 months 4 days ago #80185

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You can also use mosaic.darkdragons.space/ to generate a star field to solve. Just set it up with your camera and telescope info, center the view where you want it, then download the fits file at the bottom. It generates a synthetic star field that works pretty well for me to solve and slew.
Gayle H Riggsbee Observatory - Charlotte Amateur Astronomers Club
CEM120 - TMB 100/800 - AT72EDII w/Homemade Moonlite Compatible Arduino Focuser - AT8RC w/Moonlite CSL 2.5" w/Moonlite Stepper v3
ZWO ASI2600MC-Pro - ZWO ASI2600MM-Pro - ZWO ASI174MM-Mini - ZWO OAG - ZWO EFW
AT2FF - CCDT67 - RIRED-M63
5 months 4 days ago #80194

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Hi, my procedure is similar to the others: I make a fits picture exactly with the section I want. Be sure that the fits contains the coordinates of the section, i.e. you have prior to activate WCS in the indi control panel for your telescope. Then save the Fits. Then in the solver tab: load and solve....
 
5 months 4 days ago #80195

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Thank you guys - very helpful!
I actually tried all these methods - some of them worked differently a year ago.
There were some improvements in this department, I guess.
Didn't know about "Fills coordinates with SkyMap center" in the Scheduler.
Thanks! Appreciate your help.
Max S.

RPI 4 B (4Gb) with SMate
Askar FRA400, TPO RC6, Nikon D5500 full spectrum (with IDAS D1 clip-in filter).
ASI2600MC Pro
ZWO ASI120MM Mini on ZWO 30F4
ZWO ASI224MC-S on Orion 50 mm f/3.2
ZWO EAF x 2
SW AZ-GTi
SW HEQ5
RST-135
iOptron CEM40G
5 months 3 days ago #80204

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