Merlin66
14-03-2008, 03:28 PM
Rosco UV-IR Permacolor dichroic #38000 glass filter, 125mm sq, only 1.6mm thick ( as new)
Surplus Shed 110mm diameter Wratten #25 Red glass filter, 6.4mm thick (slight/ small rub mark on surface- as received from SS! but certainly OK for use)
The UV-IR and Wratten #25 make a great SAFE 110mm ERF combo filter at minimal cost for solar work and PST conversions.( or cut the UV-IR for CCD cameras/ eyepieces!)
Can also be used as a full aperture Ha filter ( 30Nm bandwidth) for DSO's etc etc.
Transmission curves available ( See below)
This is NOT a visual solar filter. ( You need a Baader film etc for that!)
$ 140 plus postage, guess about $10.
Accept paypal.
Surplus Shed 110mm diameter Wratten #25 Red glass filter, 6.4mm thick (slight/ small rub mark on surface- as received from SS! but certainly OK for use)
The UV-IR and Wratten #25 make a great SAFE 110mm ERF combo filter at minimal cost for solar work and PST conversions.( or cut the UV-IR for CCD cameras/ eyepieces!)
Can also be used as a full aperture Ha filter ( 30Nm bandwidth) for DSO's etc etc.
Transmission curves available ( See below)
This is NOT a visual solar filter. ( You need a Baader film etc for that!)
$ 140 plus postage, guess about $10.
Accept paypal.