Herschelwedge / Solarprism with 2" barrel for professional Solar-Photographie and Solar-Observation.
Herschelwedges (Solarprism) are made for the solar observation with
refractors. Around 95% of the solar light will be blocked. With an
variable polarising filter and strong grey filters the sunlight will be
reduced to the necessary amount. Unlike objectiv solar filters the
filtering happens close to the eyepiece or camera. Normaly the contrast
and sharpness of the solar image with an Herschelwedge is much higher.The advantages of the Lunt Herschelwedge:
Only for using with refractors:
- Perfect surfaces for a very high contrast
- Completely closed housing with integrated heat trap
- No scattered light escaping, for maximum safety
- Delivered in sturdy aluminium case with foam insert
The full solar energy enters the telescope and the filtering happens
close to the focal plane, so we only recommend refractors for the
working with the Herschelwedge. Otherwise the refractor shouldn´t have a
rear corrector lens. The optical elements would heated through the
concentrated solar energy and could be damaged. Also filters are only
allowed at the eyepiece side of the Herschelwedge and not at the front.The advantages of Herschelwedges at refractors:
In addition to the better image quality, the Herschelwedge
offers more light. So you can use special contrast filter, like the
Baader Solar Continuum. With filters like this you can increase the
contrast at the sun.Regulation of image brightness:
Of course 5% are too much for the solar observing. So you
need an additional filter for light reduction. Because the Herschelwedge
produces polarised light, you only need a simple polarising filter to
screw into the eyepiece or photoadapter. Now you can rotate the eyepiece
and so reduce the light. With additional grey filters and the Baader
Solar Continuum Filter you can reduce the brightness to the required
amount and so affect the contrast.
Warning !!!Delivery contains:
Never use the Herschel wedge without an ND3 and Top Pol or Solar Continuum Filter !!! Otherwise permanent damage of your eyes may occur !!!
ND 3.0 Filter gray
The Top Pol or Solar Continuum filter are not included and sold separately!
High qualtiy 2" Herschelwedge for safely solar observation and photography.