Celestron filters

Celestron filters

Postby 1981astro » Sun Apr 22, 2007 10:03 pm

I have a spare set of the 1.25" celestron filters, I brought some then got another set with the Eye Opener kit.

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· [b]Six Colored 1.25" Eyepiece (Planetary) Filters: Included are Kodak Wratten (#12, #21, #25, #56, #58A, and #80A) [/b][b] [/b][size=3] [/size]
o [b]Kodak Wratten #12 Deep Yellow 74% Transmission: Moon-[/b] Enhance lunar features. [b]Jupiter-[/b] Penetrate and darken atmospheric currents containing low-hue blue tones. Enhance orange and red features of the belts and zones. Useful for studies of the polar regions. [b]Mars-[/b] Reduce light from the blue and green areas which darken the maria, oases and canal markings, while lightening the orange-hued desert regions. Also sharpen the boundaries of yellow dust clouds. [b]Neptune-[/b] Improve detail in larger telescopes (11" and larger apertures). [b]Saturn-[/b] Penetrate and darken atmospheric currents containing low-hue blue tones. Enhance orange and red features of the belts and zones. [b]Uranus-[/b] Improve detail in larger telescopes (11" and larger apertures). [b]Venus-[/b] Reveal low-contrast surface features. [b]Comets-[/b] Enhance definition in comet tails.

o [b]Kodak Wratten #21 Orange 46% Transmission:[/b] [b]Moon-[/b] Greatly enhances lunar features. [b]Jupiter-[/b] Improves appearance and detail revealed in structure of Jovian belts. Enhances viewing of festoons and polar regions. [b]Mars-[/b] Reduces light from the blue and green areas which darken the maria, oases and canal markings, while lightening the orange-hued desert regions. Also sharpens the boundaries of yellow dust clouds. [b]Mercury-[/b] Reduces the brightness of blue sky during daylight observing, to reveal surface features. [b]Saturn- [/b]Improves structure of the Saturnian bands and highlights blue polar regions. [b]Venus-[/b] Use during daylight observing to reduce brightness of blue sky. [b]Comets-[/b] Enhances definition of comet dust tails and heads in larger telescopes (11" and greater aperture). [b]Solar-[/b] When using a Celestron Solar Filter, adding this orange filter will give true color rendition.

o [b]Kodak Wratten #25 Red 14% Transmission: Moon-[/b] Improves lunar features. Jupiter- Useful for studying bluer clouds. [b]Mars-[/b] Ideal for observation of the polar ice caps and features on the Martian surface. Sharpens the boundaries of yellow dust clouds. [b]Mercury-[/b] Improves observation at twilight, when the planet is near the horizon. During daylight, it reduces the brightness of the blue sky to enhance surface features. [b]Saturn-[/b] Useful for studying bluer clouds. [b]Venus-[/b] Use during daylight observing to reduce brightness of blue sky. Occasionally deformations of the terminator are visible.

o [b]Kodak Wratten #56 Light Green 53% Transmission: Moon-[/b] Enhances lunar features. [b]Jupiter-[/b] Increases visibility of the Great Red Spot. Useful for observing the tow-contrast hues of blue and red that exist in the Jovian atmosphere. [b]Mars-[/b] Excellent for increased contrast of Martian polar caps, low clouds and yellowish dust storms. [b]Venus-[/b] Useful for Venusian cloud pattern studies. Reduces brightness of blue sky during daylight observing.

o [b]Kodak Wratten #58A Green 24% Transmission: Saturn–[/b] Enhances white features in the Saturnian atmosphere. [b]Comets–[/b] Useful for observing brighter comets. [b]Moon-[/b] Enhances lunar features. [b]Jupiter-[/b] Increases visibility of the Great Red Spot. Useful for observing the low-contrast hues of blue and red that exist in the Jovian atmosphere. [b]Mars-[/b]Excellent for increased contrast of Martian polar caps, low clouds and yellowish dust storms. [b]Venus-[/b] Useful for Venusian cloud pattern studies. Reduces brightness of blue sky during daylight observing.

o [b]Kodak Wratten #80A Light Blue 30% Transmission:[/b][b][size=3] [/size][/b][b]Moon-[/b] Enhance lunar detail. [b]Jupiter-[/b] Enhance the boundaries between the reddish belts and adjacent bright zones. Useful for viewing the Great Red Spot. [b]Mars-[/b] Very useful during the violet clearing. Helpful in studying surface features and polar caps. [b]Mercury-[/b] Improve observation of dusky surface markings at twilight, when the planet is near the horizon. [b]Saturn-[/b] Enhance low-contrast features between the belts and zones. [b]Venus-[/b] Useful for increased contrast of dark shadings in upper Venusian clouds. [b]Comets-[/b] Bring out the best definition in comet gas tails.
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· [b]One Moon Filter 18% Transmission [/b]
o Celestron's Moon Filter is ideal for reducing the brightness of the moon and improving contrast, so greater detail can be observed on the lunar surface.
o Clear aperture is 21mm
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I keep forgetting to put them on eBay, if anyone is interested pop me an email or PM with an offer - on eBay they are going for £30 with delivery.

Payment via paypal or cheque.

1981astro
 
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RE: Celestron filters

Postby asterixhb » Mon Apr 23, 2007 12:33 am

Luke,
I would like to take you up on the offer of the eyepieces. Personal message to follow.

Regards
asterixhb
 
Posts: 565
Joined: Mon Feb 13, 2012 6:20 pm

RE: Celestron filters SOLD

Postby 1981astro » Mon Apr 23, 2007 12:50 am

Da, you posted before I got a chance, sorry someone already PM'ed me about 5 mins ago and made an offer :(

Sorry!
1981astro
 
Posts: 381
Joined: Mon Feb 13, 2012 6:37 pm


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