Pay in installments of $24.75 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Sep 1 - Sep 6
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Baader Semi Apo Filter 1.25"Description A filter that removes the need to combine the Neodymium Moon and Skyglow filter with the Fringe Killers to deliver an amazing colour corrected image to achromatic refractors. The Baader Semi Apo does it all in one filter. Baader Semi Apo Filter against violet fringes of refractors 1. 25" cell By selectively filtering out of those parts of the spectrum where the false colour of achromatic refractors is significant, this disturbing effect is
Description
A filter that removes the need to combine the Neodymium Moon and Skyglow filter with the Fringe Killers to deliver an amazing colour-corrected image to achromatic refractors. The Baader Semi-Apo does it all in one filter.
Baader Semi Apo Filter against violet fringes of refractors - 1.25" cell
By selectively filtering out of those parts of the spectrum where the false colour of achromatic refractors is significant, this disturbing effect is reduced. Contrast and image definition are improved. In addition, neodymium-containing glass provides a more neutral colour tone.
This filter delivers a dramatic improvement on sharpness and contrast, even with smaller aperture refractors. The RGB enhancement of the Neodymium substrate layer boosts colour contrasts, for planetary viewing and particularly for Jupiter and Mars.
Differences to Fringe Killer and Contrast Booster:
These two filters have a similar effect. They both reduce false colour, but the image also gets a yellowish touch. In some cases, for example for planetary observation, this is wanted.
The Semi Apo filter causes significantly less yellow tinting. The image has only a slightly warmer touch with a light yellow-green tone. It also has more transmission compared with a standard minus violet filter. It can also be used for deep-sky and double star observation.
The Semi Apo filter is a good addition to the Fringe Killer and the Contrast Booster. It can replace a normal minus violet filter and gives less colour shift.
Specifications
| Type of filter: | Bandpass-Minus Violet Filter |
| Transmission range: | multiple bands |
| Filter substrate thickness: | 1 mm |
| AR-Coating: |
Phantom Coating® Group |
| Filter cell: | round cell (LPFC 6 mm) |
| Weight: | 0.057 kg |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy