View Single Post
  #1  
Old 07-07-2007, 01:05 AM
ballaratdragons's Avatar
ballaratdragons (Ken)
The 'DRAGON MAN'

ballaratdragons is offline
 
Join Date: Jan 2005
Location: In the Dark at Snake Valley, Victoria
Posts: 14,412
IR Filter comparison test - Results

I had a beautiful night for this comparison test of my new IR Filter test.

The sky cleared up to give 8/10 seeing and 10/10 Transparency.

The below images of Carina Neb and Keyhole are taken under almost identical conditions, seeing temp etc.

All images taken with ED80, modified Toucam 840k Pro II, Focal Reducer, stacked in Registax, all processed equally in PhotoShop CS.

Make up your own mind about the results, but as usual feel free to comment or help.

IMAGE 1:
In the 1st panel is Carina with no filters at all. Just raw Toucam.
In the 2nd Panel I used the crummy little Toucam Lens IR Filter.
In the 3rd panel I used a proper Astronomical Imaging IR Cut Filter.

IMAGE 2: The full size images cropped to show real-size detail.
Attached Thumbnails
Click for full-size image (Carina-Filter-comparisons.jpg)
142.7 KB60 views
Click for full-size image (Carina-IR-comparison-close-.jpg)
139.7 KB58 views
Reply With Quote