brrttpaul

it was just throwing me what dark i needed to do the flats

thanks I will have another go of it now

I dont think PI does pick the specific darks, I have taken a load of darks in various exposures and made masters out of them, also a super bias. Now heres where i get stuck , I have taken a load of flats (various filters LRGB) and wanted to make a master flat in each filter. But in PI it says add the super bias and the master dark to calibrate the flat, well which dark??? the 30 sec exp the 60 sec??? I am just doing this as a library and also to try and understand what goes on , ( Im going on the more I know how it works the easier to sort out problems). In DSS all I have to do is load the darks, flats etc and it makes the master, I just want to stick with PI and persevere with it

I am redoing all my darks , flats, bias and going by the pix book. I have done my superbias and all my flats plus various lengths of darks, 30 secs 60 secs 120 secs 180 secs. (all at -25 degrees) and have been made into masters. I am now on image calibration of flat frames and become a bit stuck, it says add flat files next enable master dark and master bias, master bias is ok but im stuck on master dark as I have 4 at different exp times. Do I have to repeat the process 4 times adding a different master dark? cant see anything in the book

now that makes sense to me, when I image and ignore the chart and go by what my sample image looks like I can usually stack no problem, when i go to the chart I always get the "cant stack not enough stars".

I will get back to you when I got something, thanks for the help

I will have to take bias frames then, I was told the 1600 does not like bias so stopped using them

I was doing gain 50 offset 15 I am not sure what the median was, I do have images will it show the median in PI ?

yes thats the chart looking at that gain at 139 orange zone F6 refractor I,m looking at a 15sec exposure in LUM?, my rgb I have been doing about 3 or 2 mins , any lower and pixinsight fails to process them in batch processing, this is why I have been looking at it

scratching my head all the time these days. I have had to reset everything up the last few months , I am using the ZWO ASI 1600 mono, equinox ED80. been trying to find out the best gain/offset exposure times and theres a chart (on here i think) basically gain 0= 400 ADU etc etc, and as the gain increases so does the ADU, which always puzzles me as I always think of gain like ISO (i realise its not). Everytime i have tried to follow the guidlines my stacking has failed. Anyway last night I had a go in sharpcap and tried out the sensor analysys, the chart I am left with goes the opposite way? can anyone enlighten me I will try putting up the two charts so you can see what i mean. just looking for a happy medium in unity gain ( I was doing gain 50 but going back to unity). Cheers

I have noticed when batch preprocessing it says on the left hand side " dark threshold to low" how would i change the threshold setting? any ideas?

Thx for the reply, the reptile mat would only be used when the pc is not running and I was thinking about a dehumidifier also, another thing was along with that I could get a usb hub and take the PC indoors in extreme weather and no chance of imaging, that way I will only need to unplug one usb lead and the monitor and power, I am basically going to be starting from scratch soon as my new camera arrives. The other thing I was looking at was the ASIair but its all ifs an ans at the moment, lots to think about and work on

No I got that one ( similar its the other thats puzzling me

well just had my computer back as my motherboard went Kaput due to the weather, I was thinking of one of those reptile mats to put under the computer just to keep condensation at bay. I have an obsy so everything is permanently there, I can get get 75mm insulation boards from work as I am a bricklayer so I think the plan will be to stick those on the wall, any thoughts on the vivarium mats ? good idea or bad

the trouble I am having TBH is the lead that comes with the air is like the ones that are to plug in a monitor, in the video the asiair is supplied with one, but if you look at the set up there is another of those leads to go back to the air. pretty much useless explaining it. usb RS232 cable but in the setup it shows two of them