filter
Unterschiede
Hier werden die Unterschiede zwischen zwei Versionen angezeigt.
Beide Seiten der vorigen RevisionVorhergehende ÜberarbeitungNächste Überarbeitung | Vorhergehende ÜberarbeitungLetzte ÜberarbeitungBeide Seiten der Revision | ||
filter [2018/12/10 13:42] – roehl | filter [2019/02/24 13:10] – roehl | ||
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Zeile 1: | Zeile 1: | ||
====== Filter ====== | ====== Filter ====== | ||
+ | |||
+ | Nachfolgend sind detaillierte Informationen der zur Verfügung stehenden Filter aufgeführt. | ||
+ | |||
====== Astrodon Photometrics Johnson-Cousins Filters ====== | ====== Astrodon Photometrics Johnson-Cousins Filters ====== | ||
+ | Für die Photometrie sind Johnson-Cousins Filter vorhanden (seit Dezember 2018). Es steht auch ein Klar-Filter zur Verfügung. | ||
+ | |||
+ | <WRAP center round info 90%> | ||
+ | |||
+ | Die nachfolgenden Informationen sind der Seite https:// | ||
+ | </ | ||
+ | |||
+ | {{ : | ||
+ | |||
+ | * Spectral profiles designed after UV, B, V, Rc, Ic Johnson/ | ||
+ | * Improved B filter | ||
+ | * 100% coated – no colored glass | ||
+ | * Peak transmission guaranteed > 90% | ||
+ | * < | ||
+ | * Striae-free, | ||
+ | * 1/4-wave propagated wavefront prior to coating | ||
+ | * <0.5 arcminute substrate parallelism | ||
+ | * 3.000 +/-0.025 mm substrate thickness | ||
+ | * Parfocal with all Astrodon filters | ||
+ | * Edge-blackened | ||
+ | * 1.25″ mounted | ||
+ | * Substrate: | ||
+ | * Filter Size: 25.4mm +/-0.1mm diameter | ||
+ | * Clear Aperture: | ||
+ | * TWF: </ | ||
+ | * Parallelism: | ||
+ | * Coating: | ||
+ | * AOI: 0 degree | ||
+ | * Scratches: | ||
+ | * Particles/ | ||
+ | * Pinholes/ | ||
+ | * Edge Finish: | ||
+ | * Chips: | ||
+ | * Edge Treatment: | ||
+ | * Thickness </= 0.1mm. It may extend 0.5mm onto top and bottom surfaces. | ||
+ | |||
+ | |||
+ | |||
+ | {{ : | ||
+ | |||
+ | ==== JOHNSON-COUSINS B∗∗∗ ==== | ||
+ | |||
+ | {{ : | ||
+ | |||
+ | |||
+ | * T = 50%: 377.0 nm +/- 5.7nm; T = 50%: 473.0 nm +/- 3.8 nm | ||
+ | * 365 nm – 525 nm: match target curve by design – will not evaluate | ||
+ | * 410 nm – 425 nm: Tmin >= 90% | ||
+ | * 300 nm – 350 nm: Tave <=0.01%; 550 nm – 1100 nm: Tave <=0.01%; 560 nm – 1000 nm: Tabs <=0.1% | ||
+ | * Back reflections with theoretical values < 0.4% average by design.Listenpunkt | ||
- | Spectral profiles designed after UV, B, V, Rc, Ic Johnson/ | + | ==== JOHNSON-COUSINS |
- | | + | {{ : |
- | 100% coated | + | |
- | Peak transmission guaranteed | + | * 478 nm – 640 nm: match target curve by design, will not evaluate |
- | <0.01%T(ave) typical out-of-band 300 – 1100 nm; additionally =<0.1% Tabs for B*** | + | * 518 nm – 532 nm: Tmin >= 95% |
- | | + | * 300 nm – 460 nm: Tave <=0.01%; 670 nm – 1050 nm: Tave <=0.01% |
- | 1/4-wave propagated wavefront prior to coating | + | * Coating has been redesigned |
- | | + | ==== JOHNSON-COUSINS Rc ==== |
- | | + | |
- | | + | |
- | Edge-blackened | + | |
- | 1.25″ mounted, 49.7 mm dia. and square unmounted | + | |
- | Other sizes available on a custom basis for filters as large as 150 mm | + | |
- | Proudly made in the U.S.A. | + | |
+ | {{ : | ||
+ | * T = 50%: 567.3 nm +/- 8.5nm; T = 50%: 717.1 nm +/- 5.7 nm | ||
+ | * 550 nm – 850 nm: match target curve by design – will not evaluate | ||
+ | * 594 nm – 615 nm: Tmin >= 95%; 300 nm – 525 nm: Tave <=0.01% | ||
+ | * 900 nm – 1050 nm: Tave <=0.01%; 860 nm – 900 nm: Tave <= 1.0% | ||
+ | ==== JOHNSON-COUSINS Ic ==== | ||
- | ==== Level 3 Überschrift ==== | + | {{ : |
+ | * T = 50%: 721.8 nm +/- 10.8nm; T = 50%: 889.8 nm +/- 7.1 nm | ||
+ | * 705 nm – 900 nm: match target curve by design – will not evaluate | ||
+ | * 758 nm – 850 nm: Tmin >= 95% | ||
+ | * 300 nm – 680 nm: Tave <=0.01%; 930 nm – 1050 nm: Tave <=0.01% | ||
+ | ====== BAADER Filter ====== | ||
+ | ====== Astronomik Filter ====== | ||
filter.txt · Zuletzt geändert: 2020/11/22 16:19 von 127.0.0.1