NGC 6188 Region 3nm NII 80m

[avandonk]

Had a bit of clear sky last night and after testing guiding etc managed to get 10X8 min of 3nm NII of NGC 6188.

Full resolution image 4MB

http://d1355990.i49.quadrahosting.co...188_NII80m.jpg


I just have not had enough contiguous time to fine tune the system but it is getting there.



Bert

[avandonk]

Here is a colour image with NII mapped to red and HA to green. There is a bit of difference in these emissions but it is subtle.

Full res image 7MB

http://d1355990.i49.quadrahosting.co...188_NII&HA.jpg


The emission of NII only occurs due to the presence of very hot blue stars. This will vary from object to object. A 5nm NB filter or wider will collect both NII and HA.

Bert

[avandonk]

At the top right a PN does stand out with more NII emission.

Bert

[jjjnettie (Jeanette)]

I like the first one best Bert, a very dramatic rendition.