Astro-Physics Compatible Accessories...

2" Adapter With 3 Large Thumbscrews (ADA2003)

Use this adapter for critical applications and heavy loads, i.e. to center your CCD camera securely for an imaging run. Threads into 2.7" threaded adapters. If you prefer to use just one thumbscrew on occasion (perhaps if you are interchanging accessories frequently), simply remove the extra 2 thumbscrews for that session.

ADA2003 $50.00

CCD Telecompressor (CCDT67)

This telecompressor will provide full coverage of the ST10E chip with scopes ranging from f9 to f18 focal ratio. The 2-element cemented design transmits close to 99% of the incoming light over the range of 420 to 700 nm. The focal length of the telecompressor optics is 12". If you have a moving mirror system, the native focal ratio will increase. This optic is not recommended for telescopes with f/ratios below about f9.

The design allows full corner-to-corner illumination of the ST10E chip. This design does not add coma to the wavefront, and thus can be used with all flat-field and coma-free telescopes. The inherent resolution of the telescope is not compromised when using this compressor.

CCDT67 $148.00

Photographic-Visual Telecompressor (0.75x) (27TVPH)

The effective focal length will be approximately 0.75 times the focal length of the instrument. Deep-sky objects are recorded on film in a fraction of the time needed at prime focus. In addition, you can more effectively capture a large object or cluster of objects with the telecompressor.

27TVPH $250.00

2" Convertible Photo-Visual Barlow (BARCON)

Use this two-part accessory in several configurations to increase the focal length of the objective.

The 2-element design uses special glasses to preserve the fine color correction of the main objective. The optical elements are hand-corrected and precision centered to insure that no aberrations are introduced into the system. The Barlow focal length is -127 mm which is longer than conventional types. The Barlow features a brass locking ring as described for the 2" barrel with 3 locking thumb screws. Note the following positions and resulting magnifications:

1.7x after the diagonal
2x before the diagonal or camera adapter
2.4x before the Baader Planetarium Binocular Viewer (threaded directly into the prism diagonal)
3.2x before the Baader Planetarium Binocular Viewer used with the extension

BARCON $210.00

MaxBright Diagonal (PMDMAX) Dielectric Coatings

The Astro-Physics 2" MaxBright Diagonal was designed with several unique features to provide optimum performance and years of use. The Astro-Physics 2" diagonal has a very high-tech dielectric coating that was developed originally for military optics used in hostile environments such as blowing desert sand. There is no aluminum or other reflective metal used. The reflective surface consists of multiple layers of thin film oxides, similar to those used in anti-reflection coatings. The coatings are deposited using a sophisticated low-stress deposition method.

PMDMAX $290.00