H beta filter

sk_alex

Hi, do you plan to offer a H-beta filter (app. 486 nm bandwidth)?

It is usable for imaging some DSO since it is in the "blue" part of the visible light spectrum. You already have SII, H-alpha and OIII NB filters, so this H-beta could further extend the narrowband imaging options.

Other major companies offers such filters but it will be much better if ZWO has their own filter that is panoptical (with same focus) with other ZWO filters.

Best regards, Sasho

riklaunim

H-beta is a visual filter. There is no reasons to use it for imaging - this shorter wavelength is affected by moonlight and seeing more than H-alpha wavelength, plus the H-alpha emission is much stronger than H-beta (not to mention that some nebulae are actually emitting more light than hydrogen emission lines - and that is covered by H-alpha filter).

Sam@ZWO

riklaunim wrote:
H-beta is a visual filter. There is no reasons to use it for imaging - this shorter wavelength is affected by moonlight and seeing more than H-alpha wavelength, plus the H-alpha emission is much stronger than H-beta (not to mention that some nebulae are actually emitting more light than hydrogen emission lines - and that is covered by H-alpha filter).

thanks for the reply