Help with filter placement and size..

[Taurus Sapien]

So I recently picked up a Zenithstar 73 Refractor and I've been using it with my astromodified canon 1200d. 

So I figured that I need an IR Cut filter somewhere in my image train but where is the best place?

I have a Flat 73 R between my scope and camera so should I stick one in there or on the front of the camera?

Also I see that there's some confusion online as to what size filters fit inside the flattener. The WO website states that it's an M48 size thread, which I think is 2" but other people are saying they don't fit. Do I need an adapter? 

Thanks.

[teoria_del_big_bang]

Easiest place with a DSLR is to get a clip in filter that fits in the camera.

Similar to these

The link is to LP filters (some with IR blocking too, but if you can get one that suits you like these clip in filters that is by far the easiest way (I think).

Steve

 

[vlaiv]

50 minutes ago, Taurus Sapien said:

I've been using it with my astromodified canon 1200d. 

How is your canon astromodified?

If original IR/UV cut filter was replaced with one suitable for astronomy - then you already have UV/IR cut filter installed and you don't need another one.

[Clarkey]

56 minutes ago, teoria_del_big_bang said:

Easiest place with a DSLR is to get a clip in filter that fits in the camera

This is an easy place for the filter but the negative is if you change camera. The advantage of a standard 2" filter (assuming you need it and it fits) is you can use it with any camera or even for visual use.

[Taurus Sapien]

Thanks for the quick responses!

I think that Clarkey has a valid point, being that if I did change camera I wouldn't have to worry about it. 

To answer your question about what type of mod it was, I did it myself. I did not replace any of the filters I removed from in front of the sensor. So I do believe it would be a full spectrum modification. I am getting bloated stars in my subs.

I will still look for clip-in filters to see if any change my mind but I would rather one that fits onto the Flat 73 R. If anyone knows of any great ones please let me know!

[vlaiv]

42 minutes ago, Taurus Sapien said:

Thanks for the quick responses!

I think that Clarkey has a valid point, being that if I did change camera I wouldn't have to worry about it. 

To answer your question about what type of mod it was, I did it myself. I did not replace any of the filters I removed from in front of the sensor. So I do believe it would be a full spectrum modification. I am getting bloated stars in my subs.

I will still look for clip-in filters to see if any change my mind but I would rather one that fits onto the Flat 73 R. If anyone knows of any great ones please let me know!

https://www.firstlightoptics.com/uv-ir-filters/astro-essentials-uvir-cut-filter-125-2.html

2" filters all have M48 thread so if your flattener has M48 on front side that goes into telescope - you can use 2" filter.

 

[Taurus Sapien]

20 hours ago, vlaiv said:

https://www.firstlightoptics.com/uv-ir-filters/astro-essentials-uvir-cut-filter-125-2.html

2" filters all have M48 thread so if your flattener has M48 on front side that goes into telescope - you can use 2" filter.

 

Thanks for the info