july heat

72ed. Wide field at 420mm which plate solves to 440mm, probably because of the tsflat2 at 132mm. Recommended back focus for this field flattener is 128mm, but at that distance, the stars in the corners are not very well corrected and look like comets, hence the extra 4mm spacing, which does... nothing! The plan is to go back to 128mm and go down from there to see if there's any improvement.

Oh how I hate refractors. Oh how I hate field flatteners.

We'll call this one adventures in cygnus. Each consisting of around 50 x 5 minute frames with the veTEC571

tulip HOO

wr134 HOO

wr134

tulip

same, with a bigger hammer

sadr

With guest appearance from a ts60 where one may as well not have the tsflat2 in the imaging train at all as it does absolutely nothing. StarTools to the rescue. Oh how I hate... etc. etc. 

ngc7000