Hi Paul,
Thats just what the Ha showed. It showed the whole central area of the galaxy plus the Ha areas dotted around.
Go-tos on the NJP are quite accurate as long as my polar alignment is very good.
It takes only about 1 or 2 alignments to get to that and even more accurate after 3 or 4 but you can get away with 2.
You need to align the framing exactly before I start imaging the same object at another time.
I open a luminance image from the earlier session, reduce it in size to match the current focus image sizes (alt 1,2,3,4,5,6 etc)
and then match them up exactly before imaging again.
I use a free Chuck Faranda Temma Driver. It has a dialogue box with several handy features. One is a timer which I use every time and the other is the park position so the mount remembers its alignment - saves a lot of time. Also the dialogue box gives you easy access to correction rates for autoguiding as well as a simple click to turn the Sky into night vision mode.
Here's the link to Chucks driver :
http://www.well.com/~richardl/astro/temma/
You also need to download and install Ascom. This is also free and is linked to from the same page.
Greg.
Quote:
Originally Posted by Paul Haese
Lovely work Greg. I like the BRC version, it shows an interesting perspective to the scene. The Ha has given the galaxy inner field a bit of a pinky look, not sure if that works but it is different. Not seen many HaLRGB of this object.
With the NJP how do you find pointing to the same object on different nights? Still working out a system for my EM400 and slowly getting there. My thoughts are that I use the same alignment stars each time and the same guide star each time in the same place. I figure this gets me into the same position. Since there is no home position for the EM400.
Great image.
|
