Second test of ZWO ASI 385 on Moon

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Second test of ZWO ASI 385 on Moon

Postby XS_MAN » Sun Nov 05, 2017 9:36 am

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
XS_MAN
 
Posts: 65
Joined: Sat May 23, 2015 9:18 am

Re: Second test of ZWO ASI 385 on Moon

Postby XS_MAN » Sat Dec 09, 2017 11:35 am

Hi all, ;)

Weather is very bad and impossible to go on test imaging with ASI 385.

So I decide to post this Janssen image taken last 7th november. This picture
was "near the edge of trashbin". It's a medium resolution image with a 300 mm
telescope.

As for Clavius image, I use the Ir 742 Pro filter. Manual sort out of rw images, I only
keep less than 10% of images.

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

ZWO ASI 385 + Ir 742 Pro filter + Barlow 3x
Near 1500 raw images remaining (16000 image capture)
Exposure = 2,3 ms
Gain = 304.
Frame rate : 123 fps

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


Final image 80% :

Image


Albéric
XS_MAN
 
Posts: 65
Joined: Sat May 23, 2015 9:18 am

Re: Second test of ZWO ASI 385 on Moon

Postby TareqPhoto » Wed Jan 10, 2018 10:56 am

What is this test for, close ups of the moon?

I don't have larger scope and i just bought this camera, so what i can use this camera for?

If i use ZWO ADC do i need an IR-cut filter to shoot the moon and planets?
TareqPhoto
 
Posts: 27
Joined: Sat Sep 02, 2017 5:12 pm

Re: Second test of ZWO ASI 385 on Moon

Postby XS_MAN » Fri Jan 19, 2018 6:09 pm

What is this test for, close ups of the moon?


Yes. It's a test with an Infrared pass filter. In this case the camera is used as a monochrome camera.

I don't have larger scope and i just bought this camera, so what i can use this camera for?


Lot of funny things !
- Planetary color imaging with an Ir/UV Cut filter
- Lunar color imaging with an Ir/UV Cut filter. With enhanced color saturation it's interesting
to view the different geological areas.
- Planetary monochrome imaging using an Ir-pass filter like IR 742 PRO. Usefull in bad
seeing conditions.
- Lunar monochrome imaging using an Ir-pass filter like IR 742 PRO. Usefull in bad
seeing conditions.
- bright DSO imaging with short exposures (250 milliseconds to few seconds) as planetary
nebula and globular clusters. No need of filter if you want the maximum light flux. If you
want only true RGB colors, use an Ir/UV Cut filter.
- Bright comets.

If i use ZWO ADC do i need an IR-cut filter to shoot the moon and planets?


For pure color planetary imaging (RGB) I always use the Ir/UV Cut filter. Without it, the
color balance is awful !

Albéric
XS_MAN
 
Posts: 65
Joined: Sat May 23, 2015 9:18 am

Re: Second test of ZWO ASI 385 on Moon

Postby TareqPhoto » Mon Jan 22, 2018 12:12 am

Thank you very much!

Now the type of that ir-uv cut should be a specific one for this camera or any filter of different bands can be used here?

I have a filter that is called Baader Neodymium Moon&Skyglow, in the box of the filter it is written that it is IR cut, same it is written on the other filter: Baader Contrast Boost box, can i trust those 2 filters to be IR cut filters really if you have an idea about them?

I don't have LRGB, can't be use one of those filter to cut that IR? what about Ha filter? i do also have visual filters cheap such as UHC and OIII, what do you think about those?

Sorry i asked about those questions, because before i go and buy a new IR-cut filter i have to make sure that all of filters i already have aren't good to use or not a substitution to a real IR-cut filter maybe, and also if i will shoot targets in mono mood from the color camera, still i need IR-UV cut filter then?
TareqPhoto
 
Posts: 27
Joined: Sat Sep 02, 2017 5:12 pm


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