High Quality Red dot Finder with 40mm aperture
- Clear aperture 40 mm - magnification 1x
- Comlete metal design
- vertical and horizontal alignment
- Brighness adjustable in 5 levels
A handy tool for all astrophotographers that use a DSLR on a camera tripod.
Assembly of AST Optics red dot finder (see picture on the right) - The red dot finder has two rails - 'E' - on the bottom, which are attached onto the unit using screws - 'F'. Loosen these two screws using the Hex key supplied and remove them completely. Then take the two rails, and fix them to the finder again, but 'upside down'. This makes the prism receiver wider and the separately delivered prism rails (the part with the built-in hot-shoe adapter) can now be pushed in and tightened using the two screws.
Our expert comment:
The use of a red dot finder combined with a line filter can be very useful with SLR cameras. It allows gaseous nebulae to be photographed in moonlight or under heavy light pollution. However, the image in the finder does then become extremely dark.
We have a wide range of clip filters for DSLRs in the range: Astronomik EOS clip filters
(Bernd Gährken)
