Gelatin Filter Holders for 2.7" and 4" Field Flattener
Category: Astrophotography Accessories
Description
These two-piece filter holders were designed to hold gelatin filter sheets for deep-sky, tricolor photography. Purchase gelatin filter sheets from a camera store, cut into a circle slightly larger than the opening (be sure to allow enough material to secure the edges) and install. We suggest that you purchase a separate filter holder for each color filter that you plan to use.
27GEL2 - Fits all current field flatteners and any shipped after May 1994. Clear aperture of the 2.7" filter is 2.35" (60 mm).
27GEL1 - If you have an earlier model (prior to May 1994), we offer part # 27GEL1 with a slightly different thread.
40GEL1 - 4" version designed to fit 4" Field Flatteners.
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When it ships
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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.
Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.
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Standard Shipping · United States: $0.00
Express Shipping · United States: $3.99
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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.
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