TS-Optics 0.79x 2 ED flattener and reducer for refractors (TSRED279) extras opinie

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TS-Optics 0.79x 2 "ED is a highly appreciated, integrated focal length equalizer and flattener that allows to obtain a perfectly flat field and shorten the exposure time by up to 40 percent. Due to its parameters, as well as precise workmanship and well-thought-out structure, this product is recommended for use in professional astrophotographic sets (this model is widely recommended for cooperation with the William Optics Guidestar 61 refractor).

The four-element optical system, in which one of the lenses is made of low-dispersion glass, is responsible for obtaining the highest image quality. This type of construction, combined with the anti-glare full multilayer coating, allows you to take breathtaking pictures with excellent contrast, faithful color reproduction and great detail.

This accessory has been designed for use with astronomical and digital cameras equipped with a sensor with a width of up to 30 mm, offering the best results when exposing APS-C format matrices.

The most important features of the TS-Optics 0.79x 2 "ED reducer / flattener

• four-element optical system ensuring excellent correction of the field curvature of APO and APO ED telescopes
• Perfect correction of chromatic aberrations thanks to the use of a low dispersion lens
• possibility of connecting two-inch astronomical filters mounted from the side of the telescope
• works perfectly with the William Optics Guidestar 61 refractor
• no vignetting on the matrix with a diameter of no more than 30 mm

Technical parameters

• optical system: ED quadruplet with air gap
• anti-reflective coating: full multi-layer coating (FMC)
• number of ED glass lenses: one
• reducer multiplicity: 0.79x
• nose for connecting a telescope: 2 "
• thread on the side of the telescope: M54x0.75
• thread to the camera side: M42x075 (T2)
• thread length from the camera side: 4 mm
• thread for mounting filters: M48x0.75 (female)
• recommended matrix format: APS-C
• body material: metal

Back focus values depending on the focal length of the telescope

• up to 350 mm: 70 mm
• up to 420 mm: 65 mm
• 450 - 500 mm: 61 mm
• 510 - 600 mm: 58 mm
• 610 - 700 mm: 57 mm
• 710 - 790 mm: 56 mm
• over 800 mm: 55 mm

Elements of the set

• TS-Optics 0.79x 2 "ED reducer / flattener

guarantee

24 months