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  • ZWO Mini Filter Wheel 5x31,8mm ZWO Mini Filter Wheel 5x31,8mm

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SBIG 8x36mm self-guiding motorized filter wheel for Aluma

Product code: FW8G-Aluma

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Quick Overview

The SBIG FW8G-Aluma is the self-guiding 8-position filter wheel for Aluma Series cameras. This wheel has a guiding CCD and associated optics built into the front cover, in front of the filters. Due to the backfocus requirements, CLA camera lens adapters will not work with this cover. The carousel holds eight 36mm filters and inserts are available for 1.25″ filters. The 36 mm filters provide unvignetted imaging for the largest Aluma sensors.

Availability: Order

Order €2,490.00
22% tax incl
if you pay by bank transfer €2,415.30

Details

Aluma wheels include a positive centering mechanism that precisely centers each filter in the exact same position every time. This single-pixel accuracy completely eliminates ghost images of dust spots and other artifacts after flat-fielding.

The left-hand image below shows a dust spot on the filters. A flat-field calibration frame was taken, then the filter wheel was rotated several times before taking a second picture, which was flat-field calibrated, at right. No evidence of the dust spot is visible. This high precision results in the highest quality images and excellent photometric accuracy.

SBIG 8x36mm self-guiding motorized filter wheel for Aluma

The FW8G-Aluma includes a built-in focal reducer and autoguider. The pick-off mirror and camera focus can both be adjusted and locked using simple thumbscrews.  With the autoguider positioned in front of the filters, optimum guiding sensitivity is provided for all filter slots. Using a built-in autoguider system eliminates issues with flexure, mirror shift, and other mechanical problems that can degrade guiding accuracy.

SBIG 8x36mm self-guiding motorized filter wheel for Aluma

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