From t-kimura@asahi-spectra.co.jp Wed Oct 31 03:27:37 2007 Date: Wed, 31 Oct 2007 13:26:49 +0900 From: Toshihiko Kimura To: Mihalis Mathioudakis Cc: Vik Dhillon Subject: Measured data(NBF 417nm / H-alpha) Dear Dr.Mathioudakis, I send you all of the actual transmission data. Regarding the filter number, the label on individual package shows filter name and the number, "No.1" "No.2". 1)Specifications > Narrow bandpass 417nm > [CWL] > 418.3nm +/-1nm in collimated beam > => 417nm +/-1nm in ULTRACAM's f/2.3 converging beam > [FWHM] > 4.8nm +/-1nm in collimated beam > H-alpha(narrow) > [CWL] > 658.8nm +/-1.3nm in collimated beam > => 656.3nm +/-1.3nm in ULTRACAM's f/2.3 converging beam > [FWHM] > 4.9nm +/-1nm in collimated beam 2)Actual CWL [Narrow bandpass 417nm] No.1 CWL 418.2nm FWHM 5.2nm in collimated beam => CWL 416.9nm in ULTRACAM's f/2.3 converging beam No.2 CWL 418.2nm FWHM 5.2nm in collimated beam => CWL 416.9nm in ULTRACAM's f/2.3 converging beam [H-alpha(narrow)] No.1 CWL 658.9nm FWHM 5.4nm in collimated beam => CWL 656.4nm in ULTRACAM's f/2.3 converging beam No.2 CWL 658.9nm FWHM 5.4nm in collimated beam => CWL 656.4nm in ULTRACAM's f/2.3 converging beam Both filters have quite ideal CWL. Perfect ! And peak transmittance are also good. > I believe that the $200 from the previous invoice has been cleared. Unfortunately, it is not cleared at this moment. I sent the invoice($200) to Jennifer McCabe(she is accountant ?) by airmail soon, when I was advised on 2 Oct. I am very sorry I make you troublesome, if it is possible, could you ask her about it ? Unless she received it, could you tell me her email address or fax number ? Finally, I appreciate you chose our company as the supplier. When you need the other kind of filter in the future, please remember Asahi Spectra. Best regards, Toshihiko [ Part 2, Text/PLAIN (Name: "H-alpha(narrow)-2.txt") 4,002 lines. ] [ Unable to print this part. ] [ Part 3, Text/PLAIN (Name: "H-alpha(narrow)-1.txt") 4,002 lines. ] [ Unable to print this part. ] [ Part 4, Text/PLAIN (Name: "NBF 417nm-2.txt") 4,002 lines. ] [ Unable to print this part. ] [ Part 5, Text/PLAIN (Name: "NBF 417nm-1.txt") 4,002 lines. ] [ Unable to print this part. ]