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Product Description
Many astronomical filter-designs are perfectly suited for use with a DSLR-camera lens. Here we explain how to do this.
Our largest cell mounted filters measure 2" in mechanical diameter (having a metric thread of M48). The clear aperture is 46 mm.
In order to ease the adaptation of our 2" filters onto most camera lenses, we produce a general-adapter, to convert from the ASTRO-2" Standard (M48) into a more common photo-standard of SP54 mm. This ring is named: DSLR 2" FilterHolder M48/SP54 (item #2408166).
Individual lens adapters for most camera-lens threads are available to fit onto this filter holder. Larger lens threads may be utilized by adding another 62 mm stepper-ring.
Lens Adapter Ring: SP 54/M46 (#2958046) / SP 54/M49 (#2958049) / SP 54/M52 (#2958052) / SP 54/M55 (#2958055) / SP 54/M58 (#2958058) / SP 54/M62 (#2958062).
Step-up Rings (for cameras lenses with thread larger than M62): M62/M67 (#2968067), M62/M72(#2968072), M62/M77(#2968077), M62/M82(#2968082).M62/M67 (# 296 8067), M62/M72 (# 296 8072), M62/M77 (# 296 8077), M62/M82 (# 296 8082)
The animation right show how it works: The lens thread adapter (in this case M62 or M55 or M49) fastens onto the camera lens, next comes the Filter-Holder M48 (# 2408166) and lastly any 2" (M48) Baader-filter will thread onto the assembly.
Specifications
| MANUFACTURER | Baader Planetarium |
| SKU (#) | 2408166 |
| EAN CODE | 4047825012678 |
| NET WEIGHT (KG) | 0.01 |
| OPTICAL LENGTH (MM) | 5 |
| USAGE | to mount our 2" filters on any DSLR camera lens |
| INNER DIAMETER / CLEAR APERTURE (MM) | 47 |
| OUTER DIAMETER | 56 |
| ADAPTABLE TO | DSLR camera-lenses |
| INNER CONNECTION (EYEPIECE/-CAMERA-SIDED) | M48 |
| OUTER CONNECTION (EYEPIECE/-CAMERA-SIDED) | SP54 |
| INNER CONNECTION (LENS SIDED) | 2"/SCT Thread (50.8mm) |
| COMPATIBLE BRANDS | Baader Planetarium |
| TYPE OF ADAPTER | Expanding Adapter, Filter holder |
| ADAPTERS FAMILY | SP54 System |