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  • A dobsonian telescope is an excellent visual observing aid

    Posted by admin on Aug 15, 2014

    Dobsonian telescope generally refers to a Newtonian  or reflecting telescope mounted on an alt-azimuth wooden base.  With its ease of operation, we barely have any problems unless the user expects it's a kind of automatic or robotic telescope.  From USA Orion, they've launched computerized go-to dobsonian since 2 years ago and they are from 8" to 14".  For sure, the price will never be as low as the manual type or classic models. We mostly recommend a dobsonian to astronomy beginners who say they are keen in nightsky observations.  Therefore, a dobsonian comes in the first place to recommend for its affordable price yet larger aperture in terms of light gathering power, resolving power and its low maintenance.  Yet, it's a long time companion to those who are enthusiastic in visual observation. In our shop, we currently have imported a similar classic dobsonian from Taiwan.  Nothing fussy, but with better built of large bearing in control manner.  With the standard package, it's packed with 2 eyepieces - one 2" SuperView 30m (wide angle) and one 1.25" Plossl 9mm, plus a bright point is 8x50 optical finder and eyepiece rack (it's an optional accessory from ORION)!  GSO has designed its "brake system" for telescope up-down positioning control which we believe it could be for further adjustment in case there is different loading of accessories. Please find the features of GSO 8" Dob as follows:

    • Optical system: Newtonian reflecting
    • Aperture: 8" Parabolic primary mirror 1/12 wave
    • Focal length: 1200mm
    • Focal ratio: f/6
    • Coating: 94% Enchanced coating
    • Material: BK7
    • Resolution: 0.58 sec-sec
    • Stellar Magnitude: 14.5
    • Maximum useful visual magnfiication: 400x
    • Foucser: 2" Precision Micro 10:1 Crayford with adapter
    • Features: 3 points mirror cell with cooling fan, Roller bearing wood base
    • Mounting: Alt-azimuth wooden base
    • Eyepieces: 2" SV30mm and 1.25" Plossl 9mm
    • Finder: Optical 8x50 achromatic finder scope
    In conjunction of the Merdeka celebration, we would bundle a "Cheshire collimation eyepiece" as a bonus with the original package of GSO 8" Dob.  On top of that, buyers can just pay RM150 to own a SWA 6mm eyepiece 1.25" (regular priced at RM300...what to wait for?!) when purchase this model. Should you have any queries about this model or anything, we welcome your calls or e-mails. GS680D 1 GS680D 2 GS680D 3

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  • Great combo offer for serious novice

    Posted by admin on Aug 10, 2016

    Great combo set is a complete unit with 4″ (102 mm) Maksutov-cassegrain, mounted on a computerized Go-To CEM25 with GPS and stainless steel tripod.  Standard accessories to telescope are correct-image finder (6x26mm), Plossl 25mm eyepiece and erecting prism 1.25″  and additional mirror diagonal 1.25″ (worth RM120) and a carrying case. CEM25 GPS mount is an upgraded version of center balancing mount which works from latitudes 0 to 60 degrees.  Standard accessories are: one 4.5kg counterweight with steel shaft, stainless steel tripod and accessory try, AC power adapter (240v to 12V) and hand controller.  Features of the mount are the GPS built-in and autoguide port added.  It carries up to 12 kg for visual application while astro-imaging capability around 9 kg. Regular price of the package is RM5,200 while it’s offered at RM4,300 only, with additional free stuff.  User enjoys a great saver more than RM1,200.  Grab it now until it’s too late. Offer is based on first-come-first-serve for cash-and-carry at our shop....

     

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  • ASTRODON Premium InsideDSLR Replacement UV/IR Filter

    Posted by admin on May 6, 2016

    The DSLR camera provides the means for hobbyists to affordably enjoy astrophotography, but there is a catch. DSLR cameras were designed for daylight use. They were not designed to easily pick up the rich red colors common to astronomical objects. This deep red light comes from the excitation of hydrogen atoms in space at 656 nm. We call this hydrogen-alpha, or H-a light. Canon and other cameras have an internal filter to provide good daylight color balance, but this filter decreases the sensitivity to H-a light to about 20%. This low red sensitivity makes astrophotography with stock DSLRs problematic. Therefore Astrodon provides a replacement filter for Canon DSLR cameras that regains H-a sensitivity to 99% – about a factor of 5 improvement in sensitivity. The original Canon filter (below left) has a blue-green color, whereas the Astrodon Inside replacement (below right) is totally clear, yet it also blocks all UV and near-Infrared light. We provide local filter replacement locally.  Please be reminded that the said filter is designed to install on Canon EOS DSLR APS-C (crop sensor) models only. Buyers are required to send in the camera at own costs.  Meanwhile, buyers understand and agree that we as the service provider does not liable to any warranties and/or dust concerns.  Our dedicated personnel is solely responsible for the workmanship and its operation. You can see that the Canon filter passes only 20% of the H-a light to the sensor whereas the Astrodon Inside passes~99%. You can also see that the Astrodon Inside filter blocks all UV and Near-IR light.  In the Near-IR, we only transmit 0.003%, whereas a competitor’s filter lets 6% Near-IR light pass to the sensor. That’s 2000 times less for the Astrodon Inside filter.  We used the Canon filter spectrum from this reference. The Canon filter must be removed and replaced by the Astrodon Inside filter. For daylight use, you will use a custom white balance, often shot with an 18% gray card.  Thus, the modification allows you to enjoy daylight photography while using your Canon camera at night for astrophotography.  The Canon filter must be removed and replaced by the Astrodon Inside filter. For daylight use, you will use a custom white balance, often shot with an 18% gray card.  Thus, the modification allows you to enjoy daylight photography while using your Canon camera at night for astrophotography.  For more information, please feel free to contact us at info@stargazer.com.my or...

     

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