Filters for Nikon 810a

[cruxaustralis]

I started working with BYN a short while ago and think it's a great piece of software. I hope my question doesn't mean I misuse this forum - but I cannot find an answer anywhere on the internet. If I want to use a filter like  a light pollution filter - where do I mount this filter?  They say I cannot use clip filters for a Nikon as the built-in filter cannot be removed. I couldn't find any such filters anyway. Has any Nikon user here on the forum some suggestion for me? Sorry for bothering but I'm a bloody newbie!

[admin]

Are you using BYN with a telescope or a lens?

If it's for former, you should be able to attach a regular 2" (48mm) round filter on the tip of your 2" t-adapter.

Hope this makes sense.

Regards,

[cruxaustralis]

Thank you so much for your quick answer!

[s3igell]

Hello,

Actually, you may have problems fitting most filters in that configuration.

1. The T-Adapter has M42 "T-Threads" on the Scope-facing End. This is not the standard 2-inch Filter size nor are the finer/shallower threads of Filters (M48x0.75mm) the same Pitch as the T-Adapter Threads.
2. You will need to find a "T-Thread-to-M48x.75" Adapter.
3. Filter Threads are not necessarily deep enough to securely hold the weight of a large DSLR.

[cruxaustralis]

Yes it's actually a problem as I tried the 2" suggestion immediately. My scope came with both 1.25" and  2" star diagonals and filters but the 2" filters are too big. I know the astro community uses mostly Canon bodies but I won't/can't change as the Nikon is a present of my husband. s3igell, thank you anyway for your comment and suggestion!

[stevenmorris5]

Hi,

I own a Nikon D810a and have made a custom drop in filter cell in which I can use it for my nightscape photography as there is clearnece for all my Nikon lenses like the 14-24 and so on. 

I cut up an astronomik filter and inserted it into my filter cell which sits under the mirror. Very good fit and haven’t had any problems with it. The great thing is I can swap out a narrowband for a H-alpha filter easily.

[astroman133]

You did not say what type of astrophotography you are doing, but there are some clip-in filters for Nikon cameras. They mount in front of the existing, built-in filter.

Here is an example: https://www.digitaltrends.com/photography/cyclops-optics-clip-in-filter/

[stevenmorris5]

Hi Astroman,

I shoot both deep space and nightscape, I recently won a few awards for my nightscape image in the Epson international Pano Awards, as well as receiving image of the day on astrobin and some top picks. 

I purchased and tested many filters. I had also purchased the optolong drop in for Nikon cameras and was very unhappy with the fitment and quality. My drop in filter cell is extremely solid and secure, I have used it with many lenses and found from 20mm’s upward it’s excellent. The lenses I’ve shot with are 14-24 2.8, 20mm 1.8, 24mm 1.8, 70-200 2.8 and 300 2.8. 

I picked the astronomik filter to cut up and insert into my cell due to the excellent colour. I wanted to use the Baader UHC (I think it was) but it caused a lot of reflections and after chatting to Baader we came to the conclusion that the filter itself is highly reflective and that is the cause of the ghosts and halos using those particular lenses. 

The astronomik cls ccd doesn’t reflect at all and gives me excellent h-alpha details with excellent contrast. 

I did try to upload some photos but they where too large and I’m using my iPad as I’m far away from the computer at present.

i was trying to work on a filter cell that allowed the mirror to operate as normal but I haven’t came up with a solution yet and not sure I’ll bother as I’m very happy with the drop in I have made now.

[astroman133]

stevenmorris5,

I am glad that you have a usable solution.

My reply was intended to provide information for the OP, cruxaustralis, who was told that it is not possible to use a clip-in filter with a D810a because the built-in filter is not removable.

Obviously your experience and the availability of commercial clip-in/drop-in filters says that this is not correct.