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Back on the Road Again

Posted: Sat Sep 29, 2018 7:03 pm
by DRatledge
My first deep-sky imaging session after 18 months and boy did things go wrong! I had forgotten everything although it was made worse by having a new observatory computer after the old one had failed. The computer isn't the problem it is resetting all the software systems and getting the many parameters selected correctly. I suppose I lost about 30 minutes before I realised why things were not working - just one box not unticked! After that the camera started imaging.

The image is a screen dump from Maxim which controls the cameras - imaging and guiding. Guiding was very steady last night and the errors very small - see rms values. They are about as good as it gets for Lancashire. Target was not NGC1234 as it says but something very obscure!

Re: Back on the Road Again

Posted: Sun Sep 30, 2018 10:56 am
by DRatledge
Next job is to estimate the object's magnitude. Looks like star 16 is closest so mag must be around 14.5. This object varies from 10 to 17 mag so fairly middling at the moment.

What is it? It is the Blazar BL Lacerta - a quasar where we are looking straight down the jet from its central black hole.