Orpington Astronomical Society

Astronomy => Astrophotography => Topic started by: Ivor on Jun 28, 2012, 08:32:51

Title: NGC7000 in narrow band Ha and anything else?
Post by: Ivor on Jun 28, 2012, 08:32:51
Work has been horrendious this week (already done 40 hours since monday morning) so I'm decided to focus on something more enjoyable in preparation for the weekend which looks promising. I'm planning on giving NGC7000 with the moon being present I've decided to use Narrow band, I know it comes out nicely in Ha but I wanted to check if anyone has had any luck in O and S?
Title: Re: NGC7000 in narrow band Ha and anything else?
Post by: MarkS on Jun 28, 2012, 08:59:18

Dunno if anyone round here has done it but there are plenty of examples on the 'Net of NGC7000 in the Hubble palette.  It comes out rather nicely.
Title: Re: NGC7000 in narrow band Ha and anything else?
Post by: RobertM on Jun 28, 2012, 09:17:10
Ivor,

One thing I would say is that if you intend to do a Hubble pallet then you should do SII and OIII when the moon is out of the way because of their faintness.  NGC7000 like most nebulas is very bright in Ha  so can be captured with the moon about even though it will reduce contrast noticably - even with NB you will see a higher background count than with a clear sky.  I would suggest capturing OIII first before the moon is up too much then Ha with the moon about followed by SII when the moon is out of the way again.  Take at least one shot through each filter on each imaging night so you can see the effect of the moon on the background count and signal.

Hope that helps
Robert