-40%
Astronomik OIII Filter, 13nm Bandpass, 2
Astronomik OIII Filter, 13nm Bandpass, 2

Astronomik OIII Filter, 13nm Bandpass, 2"

$ 118.8

Availability: 100 in stock
  • Type: Narrowband
  • Brand: Astronomik
  • Item must be returned within: 30 Days
  • All returns accepted: Returns Accepted
  • Size: 2.0 in
  • Condition: Used
  • Restocking Fee: No
  • Refund will be given as: Money Back
  • Return shipping will be paid by: Buyer

    Description

    Like-new condition.
    Note this is the older, slightly wider 13nm bandpass, not 12nm. This filter
    works great at F2.8, as the jpg of the nebula described below shows.
    Also note the blue tint in the jpg of the filter is from my ancient Canon G2
    compact camera, which is cyan-challenged :-)
    The attached image was taken with this OIII filter, plus an H-alpha filter I
    sold separately, no other narrow band filters, no L/R/G/B filters, using
    a Canon 70-200mm F2.8 lens I sold separately, and processed with Pixinsight.
    I shot that in my back yard in a city with a population of 60,000 plus.
    That jpg shows the use of an OIII filter to bring color to the myriad stars,
    and lend a little subtlty to the colors of the nebula, with only 2 narrow-band filters:
    Cyan can serve as both G and B. I only wish I'd had an H-beta filter
    for B when I took this.
    Price includes PalPal fee. Buyer pays shipping.