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Dr. Flat Master (0.8x Reducer)
The William Optics Dr. Flat Master is an apochromatic triplet reducer/flattener designed for 12" - 16" WO and GSO Ritchey-Chrétien telescopes. It reduces the focal length by 0.8x and flattens the field, making it ideal for full-frame sensors with a 52mm image circle. Featuring an M48 x 0.75 camera connection and a backfocus distance of 86.15mm, this accessory enhances your astrophotography setup by expanding your field of view and ensuring edge-to-edge sharpnes.
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![Dr. Flat Master (0.8x Reducer)](http://williamoptics.com/cdn/shop/files/P-FLAT-RC-2.jpg?v=1707402171&width=2400)
![Dr. Flat Master (0.8x Reducer)](http://williamoptics.com/cdn/shop/files/P-FLAT-RC-1.jpg?v=1707401688&width=2400)
![Dr. Flat Master (0.8x Reducer)](http://williamoptics.com/cdn/shop/files/P-FLAT-RC-3.jpg?v=1707401688&width=2400)
![Dr. Flat Master (0.8x Reducer)](http://williamoptics.com/cdn/shop/files/P-FLAT-RC-m.gif?v=1707401688&width=2400)
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Dr. Flat Master (0.8x Reducer)
Sale price$845.00 USD
Flattener compatibility table
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FLAT 61A
1.0x |
FLAT 61R
0.8x |
FLAT 73A
1.0x |
FLAT 73R
0.8x |
FLAT GT
1.0x |
FLAT 6AIII
0.8x |
FLAT 68III
1.0x |
FLAT 7A
0.8x |
FLAT 8
0.72x |
Ultra 132
0.79x |
Ultra 156
0.79x |
Dr. Flat
0.8x |
---|---|---|---|---|---|---|---|---|---|---|---|---|
GS-61 | ★ | ★ | ||||||||||
Z-61 | ★ | ★ | ||||||||||
Z-73 | ★ | ★ | ||||||||||
Z-81 | ★ | |||||||||||
Z-126 | ★ | ★ | ||||||||||
GT-71 | ★ | ★ | ||||||||||
GT-81 | ★ | ★ | ||||||||||
GT-81 WIFD | ★ | ★ | Adapter | |||||||||
GT-102 | ★ | ★ | ★ | |||||||||
GT-153 | ★ | ★ | ★ | |||||||||
FLT-91 | Adapter | Adapter | ||||||||||
FLT-120 | ★ | Adapter | ||||||||||
FLT-132 | ★ | ★ | ★ | ★ | ||||||||
FLT-156 | ★ | ★ | ★ | ★ | ||||||||
RC Series | ★ | |||||||||||
Pleiades Series | No Flattener Required | |||||||||||
Cat Series | No Flattener Required |
Flattener & Reducer
FLAT 73A
Sale price$229.00 USD
FLAT 61A
Sale price$229.00 USD
FLAT 73R (0.8x Reducer)
Sale price$298.00 USD
FLAT 68III
Sale price$656.00 USD
FLAT 6AIII (0.8x Reducer)
Sale price$229.00 USD
Ultra Flat 132 (0.79x Reducer)
Sale price$898.00 USD
FLAT GT
Sale price$258.00 USD
FLAT 6AIII (0.8x Reducer) special edition for FLT91
Sale price$293.00 USD
Ultra Flat 156 (0.79x Reducer)
Sale price$898.00 USD
Dr. Flat Master (0.8x Reducer)
Sale price$845.00 USD
FLAT 8 (0.72x Reducer)
Sale price$806.00 USD
FLAT 7A (0.8x Reducer)
Sale price$691.00 USD