- Astronomik Lunar calendar for 2024
The Astronomik calendar of the Lunar phases in 2024 is ready.
- Chistmastime and New Year 2023-2024
We wish you a merry Chirstmastime and a happy and healthy 2024...
- Astronomik Lunar calendar for 2023
The Astronomik calendar of the Lunar phases in 2023 is ready.
- Chistmastime and New Year 2022-2023
We wish you a merry Chirstmastime and a happy and healthy 2023...
- Shipping methods
Shipping as registred good shipment is no longer available
- How to observe planetary nebulae
A very nice introduction to observing planetary nebulas written by Owen Brazell
- Astronomik Lunar calendar for 2022
The Astronomik calendar of the Lunar phases in 2022 is ready.
- Website down
Our website was down on dec 20st...
- H-alpha imaging with a unmodified EOS R
Imaging with an unmodified camera using a H-alpha filter
- Astronomik Lunar calendar for 2021
The Astronomik calendar of the Lunar phases in 2021 is ready.
Filter Drawer System
The filter drawer is a very reasonable alternative to the filter wheel for convenient changeing of filters. If a high time resolution is not the most important thing, the manual change of the filters usually is enough.
All parts of the filter drawer system are made of aluminium and brass, no plastic parts (bysides the knob of the drawers). All pieces are black anodised. Only stainless screws made of V2A are used. The filter drawers are also made of aluminium. No unwelcome infrared can reach the chip - how it would be possible with plastic drawers.
The drawers with the filter are fixed in the correct position, without a fastening screw be the meany of a small adujstable spring loaded ball. After each change, every filter will be right back at the same position. The drawers are designed in such a large way, that it is possible to use all sizes of filter up to a diameter of 2" or 50 x 50mm². There is a wide range of drawers available to be able to mount nearly every diameter found on the world.
The filter drawer has an optical depth of 22mm and due to that fact, can be used also at scopes with a high focal ratio.
The main body of the filter drawer system is avaiable with a wide range of threads.
Versions with mounting holes for SBIG cameras (classic body) is also available. If you use a mainbody with a female M48 thread on the telescope side, you can use your older lenses from Olympus and Nikon with your CCD camera with the filter drawer system. Mainbodies with a Canon EOS bajonett are also available. You may use your Canon lenses on your CCD camera and you may switch filters! We do need to know some specs to reach the correct backfocus.
Appropriate adapters to 2" and other fittings are also existing.
It is possible to work with the mainbody and one drawaer only, but this doesn´t make too much sense in my eyes: You have to screw and unscrew the filters at each change. I do recommend getting as much drawers as filters are in normal use plus the matching storage boxes to keep them free of dust and moisture. There is also a blind-plug available to close the mainbody when no drawer is used.
Filter Drawer System
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Mainbody M48x0.75 (F) / T-thread (M)
excl. VAT (Non-EU): €83.19 incl. VAT (EU): €99.00 -
drawer to t-cell filters
excl. VAT (Non-EU): €25.13 incl. VAT (EU): €29.90 -
drawer for 2" filters
excl. VAT (Non-EU): €25.13 incl. VAT (EU): €29.90
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drawer for 1,25" filters
excl. VAT (Non-EU): €25.13 incl. VAT (EU): €29.90 -
dust-protection cover
excl. VAT (Non-EU): €16.72 incl. VAT (EU): €19.90 -
Mainbody T-thread(F) / Meade-DSI mounting holes
excl. VAT (Non-EU): €83.19 incl. VAT (EU): €99.00
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Mainbody DX M48x0.75
excl. VAT (Non-EU): €91.60 incl. VAT (EU): €109.00 -
Mainbody DX T-thread (M42x0.75)
excl. VAT (Non-EU): €91.60 incl. VAT (EU): €109.00 -
Mainbody M48x0.75 (F) / SBIG mounting holes
excl. VAT (Non-EU): €83.19 incl. VAT (EU): €99.00
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mainbody T-thread(F) / SBIG-mounting holes
excl. VAT (Non-EU): €83.19 incl. VAT (EU): €99.00 -
mainbody T-thread (F)/(M)
excl. VAT (Non-EU): €83.19 incl. VAT (EU): €99.00 -
drawer for D36mm filters
excl. VAT (Non-EU): €33.53 incl. VAT (EU): €39.90