Iris Nebula



Description

The Iris Nebula, also NGC 7023 and Caldwell 4, is a bright reflection nebula and Caldwell object in the constellation Cepheus. NGC 7023 is actually the cluster within the nebula, LBN 487, and the nebula is lit by a magnitude +7 star, SAO 19158.[1] It shines at magnitude +6.8. It is located near the Mira-type variable star T Cephei, and near the bright magnitude +3.23 variable star Beta Cephei (Alphirk). It lies 1,300 light-years away and is six light-years across.

Equipment and processing

Telescope: Orion 8 inch F5

Mount: Orion Atlas

Camera: ST 8300M

Filters: Baader LRGB

Guiding: PHD

Processing: PixInsight

Capture software: Maxim

Exposures: L: Bin1 25x300, RGB: Bin2 8x300

Location: Catskills

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