My first try to NGC 6888

[jimao22]

Hi,

I didn't posted here from a long time but this doesn't mean I was unplugged from astronomy problems.

I made a narrowband composition for NGC6888, HA-OIII-OIII. 

Aquisition, calibration and, stacking  in MaximDL, processed in PixInsight and few final touches in PS-CS2 and StarTools.

Set-up used:

MN190/EQ6 belt drive/EQMOD, ATIK314L+ mono with Ha and OIII Baader CCD filters, guided by finder with QHY5II-L. Sensor at -5 degree Celsius.

This is my last image without OAG. I started to work with OAG and the difference is unbeliveble (!!).

[Sam]

That looks very good, well done!

[jimao22]

Could be better.

The FWHM was 3.4 and roundness 0.25...0.35, depending on exposure time (I had exposures from 300 sec to 900 sec). With OAG I started to imagine another target and I had a FWHM of 2.1 (some of shot had even 1.8) and the roundness - 0.05.

That's good !!

[cosmicdonkey]

Very nicely captured