Couple of quick images from the 150mm F4.5 Achro

[avandonk]

See this thread for more info on the scope.
http://www.iceinspace.com.au/forum/showthread.php?t=28500

First and second image is a HA of IC 4628 in Sco.
Details 4x4min at ISO 1600 with 150mm Achro at f/4.5. Astronomik HA filter.

Third is blue and green from Nebula filter HDR image and red from HA HDR image blended with ImagesPlus. Also with 150mm Achro at f/4.5.

No cooling and no accurate focusing as I still have to fit the digital calipers to the focuser.

Looks like the achro will be good for getting very dim nebulae in narrow band.

Bert

[peter_4059]

Amazing detail in there Bert.

[avandonk]

The first image was taken with the 100ED with a LPR filter done in HDR.
The second is the same area taken with the achro as before.

The third is a blending of the two in ImagesPlus

Large version 3.8MB
http://members.optusnet.com.au/~trlee8/carcomb.jpg

ImagesPlus Color Project v1.0
Final Image Saved As : I:\2008-02-10\comb_col_HA\col+NB\AutoCombineTa rget_0001.tif
User Comment :
Date: 2/11/2008 13:47
Operation : Auto Color Combine
Color Model : RGB
Red Operation : ADD
Number of Components : 2
File 1 : Combine27_R1.fit
File 2 : Combine28_R1.fit
Green Operation : ADD
Number of Components : 2
File 1 : Combine27_G1.fit
File 2 : Combine28_G1.fit
Blue Operation : ADD
Number of Components : 2
File 1 : Combine27_B1.fit
File 2 : Combine28_B1.fit

Bert