Bessell-U, bless You.

JCDowdy

Mu-43 Rookie
Joined
Jun 8, 2014
Messages
17
Location
Tennessee
Real Name
John C. Dowdy, Ph.D.
Klaus,
Bessel U band astronomy filter.
Omega SKU: XBSSL/U but rather thick at 5mm. 25mm US$100
HORBIA XBSSL/U/SBIG 1.0mm UG1, 1.0mm S8612, 3.0mm WG 305, 1.25" eyepiece £128
Nothing likely to get your pulse up!
- JD
 

kds315

Mu-43 Regular
Joined
Apr 6, 2010
Messages
155
Location
Weinheim, Germany
Real Name
Dr Klaus Schmitt
I know that filter and many other astro related UV transmitting filters, just haven't seen many flowers shot with them ;-)
Most have leakage issues anyway...I tried of few.
 

kds315

Mu-43 Regular
Joined
Apr 6, 2010
Messages
155
Location
Weinheim, Germany
Real Name
Dr Klaus Schmitt
Never had a deteriorated one, except some very old glass samples I once got which may have been stored not dry.
 
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