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Emanuele
Lord of the Ring
Reged: 11/19/03
Posts: 4967
Loc: almost Colorado
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Hi all!!
I finally received my Zeiss SFO63 Solar filter and I have a question for you all:
It has some very fine pinholes here and there! It seems that the coatings are a bit worn !
I have held it in front of the sun with my hands and if I align those fine scratches and pinholes with the sun just right I can see light coming through!
I am now just afraid to try it as I have never observed the sun and dont know if it will be ok.
Thanks for the help!
E. 
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http://www.backyardskies.com
TEC140 #393 --- Vixen VC200L w/FeatherTouch --- Takahashi EM400
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Oldfield
Postmaster
Reged: 03/20/02
Posts: 5813
Loc: Hong Kong
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It will reduce contrast at least, safe or not, is very depending on how many of them are there.
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The Home Astronomer from a city where most people are proud of the light pollution
Toys: Orion 100ED, Ranger with NGF-CM, SM40/BF10, TG-SP II, LXD55, DMK 31AF03, Canon 10x30 IS...
My observation log and ideas My General Blog
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Ralph Marantino
Postmaster
Reged: 05/01/05
Posts: 6330
Loc: Old Bridge, New Jersey
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If you are going to keep it I would black paint out the scratchesd and pinholes it will not hurt the resloution,I used black tape on my mylar filters with no problems,get a second opinion.Good luck.  I own a Zeiss Telemator so I know how good it will look,I use a Thousand Oaks Type 1 glass filter on it.
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Lunt H-alpha LS100THa/B3400
Rockland Astronomy Club
Member BAA Solar Section
Central Appalachian Astronomy Club
Astronomical League
DSPST,PST & 70mm Coronado Cal K telescope.2.2A
Zeiss 2 inch prism diagonal&Zeiss Zoom EP
2inch APM Herschel Wedge in a 94mm F7 Brandon
14.5 inch f4.2 Starmaster Dob(Zambuto mirror)
TeleView Genisis SDF with 1000 Oaks Glass filter
Zeiss 63mm f13.5 refractor 1000 Oaks Glass filter
Itty Bitty Solar Radio Telescope.
LHRIES Lite Solar Spectrometer
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APM M.Ludes
Vendor (APM Telescopes)
Reged: 05/01/03
Posts: 392
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Emanuele
maybe you go to the Telementor Yahoo Group and ask the guys there how many using such SFO with little pinholes, they are cosmetic, they do not hurt anyhow your eyes and they do not anyhow reduce visible the contrast, they are present in very many solarfilters, some coating companys even tell you upfront that they can show up during coating procedure
regards
Markus
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Ralph Marantino
Postmaster
Reged: 05/01/05
Posts: 6330
Loc: Old Bridge, New Jersey
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Thanks Markus cant wait for NEAF 
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Lunt H-alpha LS100THa/B3400
Rockland Astronomy Club
Member BAA Solar Section
Central Appalachian Astronomy Club
Astronomical League
DSPST,PST & 70mm Coronado Cal K telescope.2.2A
Zeiss 2 inch prism diagonal&Zeiss Zoom EP
2inch APM Herschel Wedge in a 94mm F7 Brandon
14.5 inch f4.2 Starmaster Dob(Zambuto mirror)
TeleView Genisis SDF with 1000 Oaks Glass filter
Zeiss 63mm f13.5 refractor 1000 Oaks Glass filter
Itty Bitty Solar Radio Telescope.
LHRIES Lite Solar Spectrometer
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Emanuele
Lord of the Ring
Reged: 11/19/03
Posts: 4967
Loc: almost Colorado
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Thanks all and thank you Markus!
I know I have asked you this before Markus, but I just wanted to here some different opinions here.  I'm a bit taken by looking at SOL for the first time !
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http://www.backyardskies.com
TEC140 #393 --- Vixen VC200L w/FeatherTouch --- Takahashi EM400
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