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Energy Rejection Filters. - For Refractors
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4 Great reasons to buy from us:
Energy Rejection Filters. - For Refractors
Energy Rejection Filters reduce the heat load on your filter assembly by absorbing or reflecting UV and/or I light and transmitting light in the desired visual spectrum. These filters are sometimes Red or Yellow glass, or dielectric IR and UV, but pass light in the desired visual spectrum. The ERF can also serve as an aperture mask to accomplish a straight angle of incidence for light entering the filter.
DayStar filter assemblies operate best at f/30 and slower. Creating f/30 configuration can be done easily with the proper ERF and/or barlow as listed below. If you don't see your telescope, visit our full list of reflectors or refractors or contact us for your exact model. Higher resolution, larger aperture configurations use a barlow.
- 140mm ERF Glass - Cell & 170mm ID Cap - For refractor
- 150mm ERF Glass - Cell & 180mm ID Cap - For refractor
- 150mm ERF Glass - Cell & 190mm ID Cap - For refractor
- 140mm ERF Glass - Cell & 200mm ID Cap - For refractor
- 150mm ERF Glass - Cell & 200mm ID Cap - For refractor
- 150mm ERF Glass - Cell & 210mm ID Cap - For refractor
- 150mm ERF Glass - Cell & 220mm ID Cap - For refractor
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Please allow 10 days for your order to arrive. We source products from all over the world to bring you epic offers and the lowest prices. This means sometimes you have to wait a little longer to get your order but it's always worth it! |
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Returns are easy, simply contact us for a returns number and send your item to our returns centre for fast processing. We'll get you a replacement or refund in a snap! |
 |
Returns are easy, simply contact us for a returns number and send your item to our returns centre for fast processing. We'll get you a replacement or refund in a snap! |
|
 |
In the unlikely event that you find your item cheaper at another online store, just let us know and we'll beat the competitor's pricing hands-down. |
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 |
We insist that you love everything you buy from us. If you're unhappy for any reason whatsoever, just let us know and we'll bend over backwards to make things right again. |
|
 |
Ordering from Scopes Zone is 100% safe and secure so you can rest easy. Your personal details are never shared, sold or rented to anyone either. |
Energy Rejection Filters. - For Refractors
Energy Rejection Filters reduce the heat load on your filter assembly by absorbing or reflecting UV and/or I light and transmitting light in the desired visual spectrum. These filters are sometimes Red or Yellow glass, or dielectric IR and UV, but pass light in the desired visual spectrum. The ERF can also serve as an aperture mask to accomplish a straight angle of incidence for light entering the filter.
DayStar filter assemblies operate best at f/30 and slower. Creating f/30 configuration can be done easily with the proper ERF and/or barlow as listed below. If you don't see your telescope, visit our full list of reflectors or refractors or contact us for your exact model. Higher resolution, larger aperture configurations use a barlow.
- 140mm ERF Glass - Cell & 170mm ID Cap - For refractor
- 150mm ERF Glass - Cell & 180mm ID Cap - For refractor
- 150mm ERF Glass - Cell & 190mm ID Cap - For refractor
- 140mm ERF Glass - Cell & 200mm ID Cap - For refractor
- 150mm ERF Glass - Cell & 200mm ID Cap - For refractor
- 150mm ERF Glass - Cell & 210mm ID Cap - For refractor
- 150mm ERF Glass - Cell & 220mm ID Cap - For refractor
|
Please allow 10 days for your order to arrive. We source products from all over the world to bring you epic offers and the lowest prices. This means sometimes you have to wait a little longer to get your order but it's always worth it! |
|
|
Returns are easy, simply contact us for a returns number and send your item to our returns centre for fast processing. We'll get you a replacement or refund in a snap! |
|
Returns are easy, simply contact us for a returns number and send your item to our returns centre for fast processing. We'll get you a replacement or refund in a snap! |
|
|
In the unlikely event that you find your item cheaper at another online store, just let us know and we'll beat the competitor's pricing hands-down. |
|
|
We insist that you love everything you buy from us. If you're unhappy for any reason whatsoever, just let us know and we'll bend over backwards to make things right again. |
|
|
Ordering from Scopes Zone is 100% safe and secure so you can rest easy. Your personal details are never shared, sold or rented to anyone either. |
