NGC 6357 in infrared - reprocess

[Stevec35 (Steve)]

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/N...03_RC14_IR.htm

[RickS (Rick)]

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

[Geoff45 (Geoff)]

Nice detail in the brown dust.
Geoff

[Stevec35 (Steve)]

Originally Posted by ghsmith45

Nice detail in the brown dust.
Geoff

Thanks Geoff

Originally Posted by RickS

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

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]

Originally Posted by 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.

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

[Stevec35 (Steve)]

Originally Posted by atalas

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

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.