Search found 12 matches

by John_Gill
Sun Apr 12, 2020 8:51 am
Forum: Accessories
Topic: Filter Orientation and Differences
Replies: 3
Views: 4530

Re: Filter Orientation and Differences

These are unmounted ZWO 36mm filters (LRGB & NB) and there are no marking on the edge of the filter. Orientation does matter, as one side is more reflective than the other ...
by John_Gill
Sat Apr 04, 2020 10:41 am
Forum: Accessories
Topic: Filter Orientation and Differences
Replies: 3
Views: 4530

Filter Orientation and Differences

Hi,

About a year ago I bought a ASI1600mmPro Camera and LRGB and NB filters.

1. What is the correct orientation for the LRGB and NB filters?
2. How can you tell which is the Red/Green filter as they look almost identical?

Regards
John
by John_Gill
Thu Oct 17, 2019 10:11 am
Forum: Feature Requests
Topic: Soft camera / EFW bag
Replies: 3
Views: 1231

Soft camera / EFW bag

Hi,

I always store my camera (ASI1600mm) and 7 position filterwheel attached. I would like a soft bag that will protect both the camera and the EFW.

Regards
John
by John_Gill
Wed Feb 27, 2019 9:10 am
Forum: Feature Requests
Topic: Equipment Improvements
Replies: 1
Views: 1173

Equipment Improvements

Hi, I recently purchased a ASI-1600 Pro camera, filter-wheel and power supply. I am very happy with everything and have 2 improvement suggestions. The power supply should have a longer cable (at least 2 meter) between the camera connecting jack-plug and the power supply. The jack-plug could also hav...
by John_Gill
Thu Jan 31, 2019 11:48 am
Forum: Accessories
Topic: Filters - Narrow Band and LRGB
Replies: 1
Views: 4582

Filters - Narrow Band and LRGB

Hi,

I recently purchased the ASI1600MM Pro (cooled) camera including the 36mm Ha, Oii and Siii narrow band and LRGB filters. Are all these filters parfocal?

Regards
John
by John_Gill
Tue Jan 29, 2019 9:25 am
Forum: Cameras
Topic: Back-Focus distance
Replies: 3
Views: 1349

Re: Back-Focus distance

Hi Martin, I had a look at my TS flattener and it is the 2.5". What is your BF distance with the APM and TS Flattener. I also use the Riccardi 0.75 reducer/flattener (this is the one that fits inside the scope) and I think the BF is 80mm. If you have other info, it would be appreciated. Regards John
by John_Gill
Mon Jan 28, 2019 6:06 am
Forum: Cameras
Topic: Back-Focus distance
Replies: 3
Views: 1349

Back-Focus distance

Hi, I am using an APM apo 107/700 scope, a 2" TS flattener and the ASI1600MM-Pro with the 7 position filter wheel and 36mm filters. The ZWO site shows the 55mm back-focus but the APM site shows 111mm for back-focus. Which is the correct distance for proper back-focus and are the filters par-focal (N...
by John_Gill
Fri Jan 25, 2019 1:02 pm
Forum: Cameras
Topic: Strange artifacts around bright star Alnitak.
Replies: 16
Views: 8137

Re: Strange artifacts around bright star Alnitak.

Hi,

The image gain 100, exposure 300 and only the Ha filter was used.

Regards
John
by John_Gill
Fri Jan 25, 2019 6:01 am
Forum: Cameras
Topic: Strange artifacts around bright star Alnitak.
Replies: 16
Views: 8137

Re: Strange artifacts around bright star Alnitak.

Hi,

The halo is a small part of the problem which I can remove with processing. The big issue is the "micro - lens" effect on bright stars, in this case Alnitak. Perhaps the issue is more about the Ha filter.

Regards
John
by John_Gill
Thu Jan 24, 2019 3:47 pm
Forum: Cameras
Topic: Strange artifacts around bright star Alnitak.
Replies: 16
Views: 8137

Re: Strange artifacts around bright star Alnitak.

Hi,

Yes it is the pro "Cooled" version

Regards
John