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
LUNT LS100 ERF 100mm Energy Rejection Filter
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LUNT LS100 ERF 100mm Energy Rejection Filter
- Attachments
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- Solar Sample with Lunt and 100mm PST Mod.png (567.52 KiB) Viewed 3808 times
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- 2018-11-07_17-19-54 small.png (597.59 KiB) Viewed 3808 times
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- 2018-11-07_17-18-32 small.png (728.07 KiB) Viewed 3808 times
Explore Scientific 152mm f6.5 achromat
Aeries D-ERF
Quark Chromosphere f27 native, (f14 when focal reduced)
Mallincam .5x focal reducer (large format)
12nm Filter
ZWO174 (IMX249 chip 5um)
Huge Sense of Adventure Viewing Creation
Aeries D-ERF
Quark Chromosphere f27 native, (f14 when focal reduced)
Mallincam .5x focal reducer (large format)
12nm Filter
ZWO174 (IMX249 chip 5um)
Huge Sense of Adventure Viewing Creation
-
- Almost There...
- Posts: 783
- Joined: Tue Feb 03, 2015 3:44 pm
- Location: Vista, CA
- Has thanked: 141 times
- Been thanked: 240 times
- Contact:
Re: LUNT LS100 ERF 100mm Energy Rejection Filter
SOLD!
Explore Scientific 152mm f6.5 achromat
Aeries D-ERF
Quark Chromosphere f27 native, (f14 when focal reduced)
Mallincam .5x focal reducer (large format)
12nm Filter
ZWO174 (IMX249 chip 5um)
Huge Sense of Adventure Viewing Creation
Aeries D-ERF
Quark Chromosphere f27 native, (f14 when focal reduced)
Mallincam .5x focal reducer (large format)
12nm Filter
ZWO174 (IMX249 chip 5um)
Huge Sense of Adventure Viewing Creation