Replacement "mini-ERF" for PST -Supplier found!

[Merlin66]

Probably not the correct section to post, but all the solar observers are here....

Maier Photonics ( with some help from Dave over on the Solar Chat site ;-) ) have developed a replacement ITF which fits the existing holder in the PST eyepiece holder.

If you have a "blue" objective PST with a failed "mini-erf" this could be the solution for you.

Check it out.

http://maierphotonics.com/656bandpassfilter.aspx

[JamesF]

Now we just need a replacement for the rear filter that suits a one metre focal length

James

[Merlin66]

Depending on the success or otherwise of the PST version, I'd like to think Maier could develop a suitable ITF replacement for the failed Coronado/ Lunt blocking filters......

[Stu_2011]

Thanks - an interesting find and could be really useful. I've noticed on my PST that although the mini-erf looks fine and hasn't degraded at all it does seem to have some pin-holes in the coating. If I shine a bright LED bike through the ERF I can see the pin-holes. Maybe 6 or 7 tiny holes. Views are lovely still but I'm concerned about light leakage and damage to the blocking filter. I might invest in one of these.

Sent from my iPad using Tapatalk

[Moonshane]

I have just made an enquiry to them about buying one for my PST mod. Currently using a 1.25" 35nm HA filter but will be happier again with the ITF in the right spot.

[Merlin66]

Whooow - that's an old thread resurrected.

Maier have successfully been supplying replacement ITF filter elements for the past few years. These are drop-in replacements for the PST and Coronado BF diagonals.

Highly recommended.

 

 

[Moonshane]

cheers Ken

I found the thread when searching - I knew I had seen it somewhere!