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 Post Posted: Sun Nov 05, 2017 9:36 am 
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Joined: Sat May 23, 2015 9:18 am
Posts: 50
Hi all,

Very bad seeing conditions but I want to try ASI 385 on Moon. So please, don't care
about the resolution, I know it's not a wonderful image.

Here I would like to emphasis the difference between field of view between ASI 384 and ASI 224.
Both have clear window and when using infra-red filter (Ir-pass) both can be used as
monochrome camera. Of course, the Bayer matrix remains visible (see crop picure) but it's
possible to reduce it to the minimum when adjusting properly White Balance (Wred and Wblue
parameters). Remember that to work at full resolution it's important to do not debayer
the images.

There's always a remain of Bayer matrix, so processing is more difficult than classical
monochrome images. It's necessary to use blur filtering to be sure the software will not
be "attracted" by the matrix. Here I use old Registax 5.0 for processing.

Even with an Ir 742 Pro filter, high frame rate and manual sort out, I only keep 834
raw images from a 10700 images capture. So Less than 10%, very poor result !

SETUP :
--------
Newtonian Orion Optics 300 mm F/D 5.3, on EQ-6 mount
------------------------------------------------------

ZWO ASI 385 + Ir 742 Pro filter + Barlow 3x
834 raw images remaining (10700 image capture)
Exposure = 2 ms
Gain = 363.
Frame rate : 123 fps

Visual sort out.
Registration with Registax 5.0.
Post-processing with Iris + Photoshop.


Final image 100% :

Image

Comparaison with field of view of ASI 224 :

Image

Bayer matrix - Crop 200% :

Image


Best.

Albéric


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