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For adapting any cell mounted Baader 2 inch Filter onto a camera lens with 52mm front filter thread you will need:
#2408166 Baader DSLR 2" Filter-Holder M48 / SP54: https://www.baader-planetarium.com/en/baader-dslr-2%22-filter-holder-m48sp54.html
#2958052 Baader Lens-Adapter-Ring SP54 / M52: https://www.baader-planetarium.com/en/baader-hyperion-dt-ring-sp54m52-for-dtadapter-iiandiii-and-hyperion-eyepieces.html
Based on the SP54 thread, we offer many more adapters for various camera threads, our so-called Hyperion DT-rings. https://www.baader-planetarium.com/en/catalogsearch/result/?q=sp54
Both thread sizes come with our proprietary pitch - which is not the same for the female and male threads.
This is our own proprietary "emergency solution" for uniting a world were manufacturers all over the world copy from each other - to the point that there are almost a dozen different pitches in use for male and female threads. Traditionally US-companies used to do a UNF-based pitch and the rest of the world went for metric threads - but these do vary from 0.5 to 0.75.
For this reason it does not make sense to publish our non standard pitch because our pitch is made to cope with all existing metric and US-pitch standards - and as said - our solution has evolved from sheer necessity. It is a mixture of a queer pitch and under-/over-dimensioning . We will not want to declare this as a standard and get bashed up for it. It works for us and is a result of 20 years adaptation to fit our filters onto all crazy threads we have seen. And inspite of this - every now and then there comes another "dragonboat-eyepiece" were even our filters may not fit...
Baader 2" Filter Crown Tool
This tool is used to unscrew hard-to-reach 2" filters. It was originally developed for the Baader 2" Cool-Ceramic Safety Herschel Prism Mark II – (Visual / Photo) (various versions available) to make it easier to replace the installed filters and is designed for all current Baader 2" filters with low-profile mounts - fit not guaranteed with older filters.
Our modern filter cells are very thin-walled to provide the largest possible clear aperture for the actual filter. If a filter is tightly fitted and difficult to access (e.g., in a filter changer or in the rotation mechanism of a Herschel wedge), it can easily deform if you grip and rotate it with only two fingers. Deforming the filter housing can cause it to jam even more than before. With this 2" filter crown tool, the pressure is distributed over a large area so that it cannot deform - just as if you were gripping the entire filter frame with your hand. This gives you a much better grip to twist it out - and you don't have to worry about accidentally leaving fingerprints on the filter surface.
Our new tool, the "Filter Crown Tool", is specifically designed for all modern Baader 2" mounted filters. This is due to the unique design of our filter cells, which feature a precisely milled "filter crown". The filter crown tool interacts with this special notch and is only effective when used correctly. Because of these features, the tool is not compatible with filters from other manufacturers.
This crown key is made by 3D printing. 3D printer owners can also find the print file in our download area.
|Net weight (kg)||0.025|
|Filter mounted||Mounted (LPFC 6mm)|