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Excellent
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Description:
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NEW Both Wedge Systems in Stock,
Photo $619.00
http://www.astrovid.com/prod_details...uerystr=bp-her
and Visual! $529.00
http://www.astrovid.com/prod_details...uerystr=bp-her
Call toll free 1-877-348-8433 to order
Baader Planetarium Safety Herschel Wedge, Safety Precautions
A Herschel Wedge Solar Prism is a professional tool for the serious Amateur, and delivers the absolute finest true white light high-resolution and high-contrast views possible from your telescope. The first surface uncoated reflective design results in a pure white light view, with no selective filtration, permitting you to see solar detail in the natural color or to permit further selective filtration in any wavelength desired. The Baader Planetarium Herschel Wedge Solar Prism is, in our opinion, the finest ever produced, using a Zeiss prism and other proprietary features to reduce scattered light to an absolute minimum. The solar disk will be seen against a jet-black background with granulation, spot detail and fine contrasts that you never imagined.
As with any solar viewing system (including glass or mylar objective solar filters), the Herschel Wedge Solar Prism requires responsible handling. Herschel wedge prisms have been used by professionals and amateurs for many years, and are quite safe if some care and precautions are always observed. Be sure to read and understand all precautions before placing the prism into use. If you have any questions or doubts, please contact Alpine Astronomical (support@alpineastro.com) or the manufacturer - Baader Planetarium (www.baader-planetarium.de). Safety warnings are also listed on the Warning Plate found on the side of the prism. Please do not remove this plate.
Precautions:
NEVER remove the 1:1000 (D=3) neutral density filter. This filter is absolutely required for all visual use of the prism. The filter comes already pre-mounted from the factory at the front of the 2” eyepiece holder, and is permanently fixed into the holding cell. Important: Before each and every use, check to ensure that the filter is in place and securely mounted in the prism (also not loose, cracked, or broken).
The Baader Light Trap renders the output beam harmless to the touch or sight. Please ensure the light trap screen is in place before each use, and encourage onlookers not to poke at or insert any objects up into the output area. The energy from the prism still must first contact the screen, and a careless prodding finger can possibly be inserted into this narrow region where the beam still has enhanced intensity.
Never leave the telescope outside unattended during use (a requirement for any solar viewing with any solar filtration device).
Prior to using any long accessories (barlows, etc) please first check and ensure that they do not protrude so far as to contact the internal 1:1000 neutral density filter. This will prevent the possibility for damage to the filter.
General Use:
As supplied, the prism is ready for use. The 1:1000 filter (D=3) neutral density filter that comes permanently mounted in the prism is absolutely required for safe use.
Though not required for safe viewing, we also recommend adding one of the additional neutral density filters provided, onto your eyepiece or eyepiece reducer (never at the front input of the prism). This will reduce the intensity for best viewing and contrast.
A polarizing filter may also be used on the eyepiece to provide variable adjustment of brightness (the Herschel prism is partially polarizing). By rotating the eyepiece, you can easily adjust the intensity to your taste.
Only use the Herschel Solar Prism with refracting telescopes. Reflecting telescopes may be damaged by the concentrated energy at their secondary mirrors.
When using auxiliary optics (barlows, telecompressors, etc), always place them After the Herschel - Not Ahead of the Herschel. Any optic placed ahead of the Herschel would be exposed to unfiltered solar energy and may be damaged by the potential heat buildup.
Herschel Wedge Safey Baader vs. INTES and Astro Engineering
Letter from Thomas Baader about other wedges and safety issues!
I've seen this when it was announced by the chinese and noted that's a chinese copy of an INTES-solar wedge prism device (from Russia).
Both units we do consider as NOT safe. Especially the exhaust MIRROR on the bottom side
can create a severe problem - in the USA !
And likewise the polarizer alone is a severe problem as well ! Almost too bright - and transmitting in the IR...
The chinese actually have no idea what they are producing here. They offer this "in the best of intention",
but they cannot do the customer service that the Intes-salesperson gave to each customer... and the UK- retailer who claims this as his idea seems to be out of any clue just as well.
There is no need for a double polarizer as the Herschel-prism itself works as polarizing device - so that just one polarizing glass ist necessary.
In Germany the INTES unit was offered without any neutral density filters - but for "political" reason only - because the unit would have been too expensive compared to our Herschel Wedge product..
So with every sale, the sales rep here persuaded the people to buy the ND-filters separately.
The chinese just bought a sample and copied what they've got - but they were not informed that they must copy the ND-filters as well.....
In Europe still all this is no problem. If you would climb up a pole of a high power overland power line and fall down in ashes - nobody would blame the power company.
But on your end I guess that a n y lost eyesight due to such a faulty solar prism item could find a grumpy judge to make it a million dollar case.
We've gone a very long way to make our unit safe enough in order to being able to offer it in the States - I think you should leave this chinese unit for others to sell.
Sooner or later someone will be very unhappy about having this in his catalog.
Thanks and best regards
Thomas Baader
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Keywords:
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Baader Planetarium - 2.00" Deluxe Herschel Wedge Solar Prism Both Visual Photo Versions
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AstroClassifieds.com;)
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