With a run of clear & cold evenings it seemed a waste not to try for something despite the ongoing Christmas illumination. I was keen to sort the collimation on my main scope so chose a target fairly near the meridian to minimise the extra light pollution and the later moon rising. NGC 1333 is a small area of nebulosity in Perseus which was perhaps a bit optimistic given the sky conditions but the result was sufficient to show that the collimation is now back on track. Details: 10" f4.3 Newt. 10x 8 minute exposures @ iso800 with CLS in DSS, CS2 & XAT.5.1.10
Collimation & NGC 1333
With a run of clear & cold evenings it seemed a waste not to try for something despite the ongoing Christmas illumination. I was keen to sort the collimation on my main scope so chose a target fairly near the meridian to minimise the extra light pollution and the later moon rising. NGC 1333 is a small area of nebulosity in Perseus which was perhaps a bit optimistic given the sky conditions but the result was sufficient to show that the collimation is now back on track. Details: 10" f4.3 Newt. 10x 8 minute exposures @ iso800 with CLS in DSS, CS2 & XAT.
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