LUNT LS100 ERF 100mm Energy Rejection Filter

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Starry Jack
Ohhhhhh My!
Ohhhhhh My!
Posts: 84
Joined: Tue Feb 03, 2015 3:44 pm

LUNT LS100 ERF 100mm Energy Rejection Filter

Post by Starry Jack » Thu Nov 08, 2018 1:31 am

I have a near perfect Lunt 100mm (4") ERF. This is used in a DIY PST (or similar) H-alpha scope modification. You may recognize this ad also on Cloudy Nights.

In my case, I used it on the end of my inexpensive 100 mm donor scope and placed the PST (without its own 40 mm lens unit) in the focuser. The result becomes a 100mm PST! It takes wonderful photos (I never trust any home-built scope with my eyes).

Lunt does not sell these directly anymore, but they appear to be available from Bresser and Teleskop Express and APM Telescope for 519 Euros ($593) + International Shipping.

This does not include a mounting cell, but mine fit PERFECTLY right in the objective lens holder of my Celestron 100 mm donor scope.

-Glass is RG630
-Aperture is 100mm
-Thickness is 3.5mm
-Side 1: Dielectric IR Blocking Coating
-Side 2: Broadband AR coating
-Wavefront: <1/4 wave

Asking $395 (includes $10 of shipping charges and includes PayPal fees) or will consider a trade for a Blocking Filter. I am in the San Diego area for local pickup if you like.
Thank you for looking,
Jack
Attachments
Solar Sample with Lunt and 100mm PST Mod.png
Solar Sample with Lunt and 100mm PST Mod.png (567.52 KiB) Viewed 159 times
2018-11-07_17-19-54 small.png
2018-11-07_17-19-54 small.png (597.59 KiB) Viewed 159 times
2018-11-07_17-18-32 small.png
2018-11-07_17-18-32 small.png (728.07 KiB) Viewed 159 times

Starry Jack
Ohhhhhh My!
Ohhhhhh My!
Posts: 84
Joined: Tue Feb 03, 2015 3:44 pm

Re: LUNT LS100 ERF 100mm Energy Rejection Filter

Post by Starry Jack » Fri Nov 09, 2018 4:30 am

SOLD!

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