Astro Essentials 1.25'' #47 Violet Filter

Astro Essentials 1.25" #47 Violet Filter

  (2 Reviews)
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About this product

Model:  ae_fltr_47_125
Part Number:  AD061

Astro Essentials 1.25" #47 Violet Filter

Astro Essential colour filters for astronomy are most often used to enhance contrast when observing the Moon and planets.

Results depend on seeing conditions, the telescope and the target being observed or photographed but the right filter can make a significant difference when, for example, viewing the lunar surface or teasing detail from Jupiter's weather bands or Saturn's rings. 

See our handy guide to colour filters and how they can help improve your lunar and planetary visual observing.

Wratten #47 Violet Filter

  • The most popular use of this filter is to help reveal details in the cloud tops of Venus. It can also help to enhance lunar definition.
  • Use to observe Mars, it helps to reveal high clouds as well as haze in the polar regions. Used on Saturn it can help to reveal details within the ring structure.
  • The low light transmission of this filter means that it should only be used on larger telescopes.


  • Wratten #47 Violet Filter
  • 1.25" Filter Size with M28.5x0.6 Threads
  • Premium optical glass with dyed-in-the-mass colour mounted in a precision metal cell
  • Threaded both sides to enable stacking
  • Supplied in a protective storage case
  • Manufactured by GSO in Taiwan

Customer reviews

Average Rating (2 Reviews):  
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Full Moon Filter
08 December 2022  | 

Several reviews on this filter.... for and against. Used it last night on the full moon and it certainly cuts out the glare allowing only 3% of light through. Enhances contrast on crater rays and objects on the moons periphery. Main benefit is not being 'blinded' in one eye when switching to other night sky targets. Tried variable polarising filters but prefer this as long as you don't mind a violet moon. As usual, excellent and prompt service from the FLO team. I hope the "comes with snow" sticker on the packaging wasn't a weather forecast!😉

Rating (max 5):  
Astro Essentials 1.25" #47 Violet Filter
18 June 2021  | 

For my purposes the title should perhaps read Micro Essentials 1.25" #47 Violet Filter, as I use the item during my microscopical investigations.. I use this hgh quality optical device to add effects to the photomicrographs which I produce, and find it to be ideally suited to this purpose and also to be perfectly compatible with the other equipment that I use.


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