NGC 6357 in infrared - reprocess

[Stevec35]

There wasn't a lot I could do to improve this one given that the data was pretty ugly but I think this version is an improvement.

Cheers

Steve

http://members.pcug.org.au/~stevec/NGC6357_STXL6303_RC14_IR.htm

[RickS]

Something very odd happening with the two bright stars on the left, Steve?

[Geoff45]

Nice detail in the brown dust.
Geoff

[Stevec35]

Thanks Geoff



I probably should have mentioned that Rick. According to Don Goldman the artefacts around the bright stars are due to the anti-reflection coatings on the CCD sensor not being optimized for infrared wavelengths.

[atalas]

Hm,anti reflection coating causing reflections,kinda odd.....Still,a great piece of work Steve.Well done.

[Stevec35]

Thanks Louie. I think the key thing is that anti-reflection coatings, being interference filters, are optimized for visible wavelengths and, given that IR wavelengths are longer then you can still get stray reflections.