Harlequin Astronomics - Singastro Forum Special

Here is the place for vendors to make their product annoucement.
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harlequin2902
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Harlequin Astronomics - Singastro Forum Special

Post by harlequin2902 »

Image

Harlequin Astronomics "Singastro Forum Special"

ScopeTronix 1.25" Colour Filter Set with case

Set of 4 filters : Red #23A, Blue #80A, Green #58A, Yellow #12

Usual S$65.00 + S$45 (ScopeTronix enforced EMS shipping)

Now at just S$60.00 nett

These just arrived fresh from the US this morning and we have only one set left by the time we are posting this ! So we have decided to make this into a "Forum Special" for the benefit of our Singastro friends 8)

More "Forum Specials" from Harlequin Astronomics to follow in the future ! Keep a lookout for them as you never know what may be appearing here :D
Samuel Ng

aquacocoa85
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Post by aquacocoa85 »

for an achromatic refractors, issit better to get a colour filter like your's or a VR filter? or they serve different puroposes in removign false colour?

Aq85

Grievous
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Post by Grievous »

Colour filters work as in a way to enhance certain wavelengths of colours and to block out others, so as to achieve a better contrast for features. Doesnt help much removing false colour. A VR filter can work some wonders, but dun expect much.

Charlie
The gentle light of a distant galaxy
must needs pour into mine eye.
Or i shall with bent and turned,
fall me down, distraught..To die.

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harlequin2902
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Post by harlequin2902 »

Hi,

The 2 filters you mentioned are designed for different purposes.

These colour filters above are "planetary filters" and are usually used to enhance certain observable features on some planets (e.g Mars, Jupiter, Saturn), making them stand out with slightly higher contrast. They do not work the same way as VR / MV filters.
Samuel Ng

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Airconvent
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Post by Airconvent »

aquacocoa85 wrote:for an achromatic refractors, issit better to get a colour filter like your's or a VR filter? or they serve different puroposes in removign false colour?

Aq85
some people find the colours on a short FL achromat irritating but if it does not bother you, there is no requirement to the VR (or MV-1) filter. These filter basically removes the purple tinge but in the process also cut off a little bit of light. Your image also get a yellowish tinge...
Depending on the design and number of lenses, colour may be minimal even for an achromat such as the Pronto.,

rich
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Captain, RSS Enterprise NCC1701R
United Federation of the Planets

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weixing
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Favourite scope: Vixen R200SS & Celestron 6" F5 Achro Refractor
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Post by weixing »

Hi,
Have try using a barlow?? Normally, a barlow will reduce the false colour.
Yang Weixing
:mrgreen: "The universe is composed mainly of hydrogen and ignorance." :mrgreen:

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