[SOLD] PRICE DUMPED, UBVRI 1.25” Custom Scientific filter set

Bassnut (Fred) · #1 04-09-2009, 05:28 PM

These have to go, $400 firm.

A set of 5 off 1.25” UBVRI Custom Scientific Bessel science filters.
New from OPT, these are a total of US$875 or AU$1342 (incl GST and freight etc from the US)
For sale at AU$400 for the set in as new condition, free freight anywhere in OZ.

Bassnut (Fred) · #2 03-11-2009, 07:00 PM

Price Dumped to $400 firm.

[1ponders] (Paul) · #3 03-11-2009, 11:33 PM

How old are they Fred?

[1ponders] (Paul) · #4 03-11-2009, 11:34 PM

Sorry I skipped and missed the "as new" bit

Bassnut (Fred) · #5 03-11-2009, 11:39 PM

Purchased mid 2007. Installed once, and not touched thereafter, apart from recent removal back into there boxes.

[1ponders] (Paul) · #6 04-11-2009, 12:01 AM

Did you find much use for the U and the B filters considering sky extinction. What camera were you using them with for sensitivity in the U and B range? I would be thinking of using an ST7.

Bassnut (Fred) · #7 04-11-2009, 12:12 AM

They were used on a ST10XME, NABG, like the ST7.

They were installed for science users whilst the rig was with GRAS. I didnt use them myself, I know very little about the their application.

Bassnut (Fred) · #8 05-11-2009, 07:57 PM

OK, last try, $400 the set firm or I give up. Less than a third of the price new.

Bassnut (Fred) · #9 06-11-2009, 09:42 AM

Sale pending

moont · #10 06-11-2009, 10:24 AM

Fred,

I undertake photometry on a regular basis and may be interested in buying your filters but would like the answer to a few questions:

1. Are these the Bessell prescription as published in his PASP paper (circa 1990) for PMT photometry or are they the later prescription for CCD photometry?

2. Are they mounted in standard 32 mm (1-1/4") threaded rings?

3. Why are you selling them?

Terry

Bassnut (Fred) · #11 06-11-2009, 10:34 AM

Sorry Terry, sale pending from last night.