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Skywatcher Black Diamon 80ED

- 2017년 2월 5일 일요일

 

 

2016년 11월 부터 동우를 어린이 천문대에 데려다 주면서 별에 대한 관심이 생겼고, 

작은 관심은 별하늘지기, 별을 나누는 사람들, 미드 코리아 등 카페에 가입하게 만들었습니다.

카페에서 본 또 다른 사람들의 취미 생활의 글들로 인해 오늘 망원경을 구매게 되었습니다.

오늘부터 천문을 취미로 가진 사람들의 세계에 동참 합니다.

 

천문 입문을 위해서 오늘 아래와 같이 천체망원경, 가대, 아이피스를 구입 했습니다.

Vixen 장비가 좋을 것 같았지만, 가격이 너무 고가라 EXT 90 MAK, Skywatcher 80ED 수준에 가격을 맞추다가

마침 별하늘지기 카페에서 중고 글이 올라와 Skywatcher 80ED로 결정 했습니다. 

 

아직은 천문에 대해 병아리 지식이지만, 오늘을 시작으로 블로그에 작은 천문 지식을 쌓아가 보겠습니다. 

 

- 구매한 장비 이력

 

 

 

 

 

1. Skywatcher black diamond 80 ED

 

 

The Black Diamond 80 ED is a modestly wide-field telescope offering bright, wide swaths of sky in a single view. It is well suited for wide-field astronomical observation of prominent nebulae, star clusters, and galaxies from a dark-sky location, or can be used as an astrograph for sky photography. As a terrestrial spotting scope or telephoto lens, the Black Diamond 80 ED’s performance is absolutely superb. Ultra high contrast allows the subtlest of details to be easily scrutinized under conditions of good seeing. The petite silhouette of the Black Diamond 80 ED makes for an excellent compact, portable telescope that travels light and fits in a small space. At about 50-power structural detail becomes apparent in our solar system’s gas giants like Saturn and Jupiter. The Moon also exhibits striking crater detail along the lunar terminator.

 

Metallic High-Transmission Lens Coatings 
Each air-to-glass lens surface has exotic anti-reflection metallic coatings applied to ensure optimum light through-put of approaching 99.5%. The proprietary Sky-Watcher “Metallic High-Transmission Coatings” (MHC) are the finest photon anti-rejection coatings in their class.

 

Light-Baffled Optical Systems
The objective lens cell is light-baffled to reject stray, unfocused light. The draw tube is likewise baffled to insure optimum contrast. The tube interior is flat blackened to help prevent unfocused internal light reflections from reaching the focal plane.

 

Precision 2” Dual Speed Crayford Focuser is Standard
Optical focus is achieved by means of a mechanically ultra-smooth, backlash-free, precision 2” Dual Speed Crayford Focuser-assembly. This focuser offers fine and ultra-fine focusing adjustments.

 

Tube Materials
The optical tube material is rolled steel, powder-coated reflective gloss black with gold fleck accent. The front and back cells are cast-aluminum painted white, or black. 

 

Telescope Tube Attachment Hardware:
The optical tube comes with attachment hardware that allows it to be securely fastened to any Sky-Watcher mount. The quick-release tube rings provided with Black Diamond 80 ED are cast-aluminium, painted white.

 

Included Components for Selected Models*
Black Diamond 80 ED is supplied with 2” Dual Speed Crayford Focusers and quality foam-lined aluminium carrying cases as standard equipment. 

 

 

2. ATZ altazimuth mount

 

 

This altazimuth mount with a lightweight aluminum tripod is a perfect choice for both terrestrial observations and stargazing. Levenhuk Ra ATZ has precise altitude and azimuth slow-motion control mechanisms; and is much easier to use than any equatorial mount. Besides, this mount is very compact and lightweight, which allows you to easily carry it to the observation site. This mount is a perfect addition to your equipment, as you do not have to adjust it before every stargazing session.

The durable aluminum tripod may be adjusted to a height within the range of 35.4"–51.1" (900–1300 mm). This mount may be used with Newtonian telescopes and refractors of less than 150-mm (5.9-in) aperture. Total weight of the mount and the tripod is 14.3 pounds (6.5 kg).

 

 Mount type 

 altazimuth

 Slow-motion controls

 manual

 Maximum payload capacity, kg

 9

 lbs

 20 

 Tripod height, mm

 900–1300

 in

 35.4–51.1

 Weight with tripod, kg

 6.5

 Total weight, kg

 8

 lbs

 18

 Usage

 General use product.
May be used by kids
over 3 years old.

 

 

3. Williamoptics UWAN 4mm 1.25" Eyepiece

 

The ultimate high power eyepiece for ultra wide field views!

The UWAN 4mm will yield truly amazing views of our starry sky at a truly amazing price. Finished are the times when a quality eyepiece had to cost the earth! Now you have a choice: take it or regret it!

Super Wide FOV
• Outstanding ultra-wide field of view: 82 deg. F.O.V.
• Fully MultiCoated (FMC) glass for excellent light transmittance.
• Reduced chromatic aberration, but still bright.
• Improved contrast compared to similar EPs.

Great Contrast
• Fully internally blackened (lenses’ edges and internal spacers).
• No flaring or ghosting on high-contrast objects.
• Parfocal.

Light and Easy
• Innovative twist-up rubber eyecup.
• Long eye-relief: 12mm.
• No internal reflections, kidney beaning or other distracting distortions.

Terrific Fit and Finish
• High-resistance anodized black barrel.
• Smooth design for no hook up in your focuser.
• Threaded for filters’ usage.

 

Model UWAN 4
Focal Length 4 mm
Field Stop Diameter 6 mm
Lens Structure (#Elements/#Groups) 7/4
Field of View 82
Eye Relief 12mm
Barrel 1.25"
Coating FMC
Parfocal Yes
Weight 200g

 

4. Williamoptics SWAN 9mm 1.25" Eyepiece

 

 

SWAN: a premium eyepiece for your most demanding observations.
Unforgettable views of star clusters and the moon at 72 deg. F.O.V.
A premium eyepiece at a fraction of the cost it’s worth!

Super Wide FOV
• Outstanding super-wide field of view: 72 deg. F.O.V.
• Fully Multicoated lenses for excellent transmittance.
• Reduced chromatic aberration.
• Improved contrast compared to similar EPs.

Great Contrast
• Fully internally blackened (lens edges and internal spacers).
• No flaring or ghosting on high-contrast objects.
• Parfocal.

Light and Easy
• Soft rubber eyecup.
• Long eye-relief: 12mm.
• No internal reflections, kidney beaning or other distracting distortions.

Terrific Fit and Finish
• High-resistance anodized black barrel.
• Smooth design for no hook up in your focuser.
• Threaded for filters’ usage.

 

Model SWAN 9
Focal Length 9mm
Lens Structure (#Elements/#Groups) 5/4
Field of View 72
Eye Relief 12mm
Barrel 1.25"
Coating FMC
Parfocal Yes
Weight 70g

 

5. Williamoptics SWAN 15mm 1.25" Eyepiece

 

 

The Swan eyepieces are super wide angle designs with 72° apparent field of view. They use simple but sophisticated five-lens optical systems for generally higher contrast than the more complicated optical designs used in some other super wide angle eyepieces that use up to eight lenses. All lenses are fully multicoated for high light transmission. Lens edges and internal field stops are blackened to reduce internal reflections and improve contrast. The rubber grip ring is useful for safer handling of the heavier 2” eyepieces when wearing gloves in cold weather. The eyepieces have soft roll down rubber eyecups for eyeglass use. They can be used for all types of observing, with all telescope types, but they are recommended for use with focal ratios up to f/6 and above. Dust caps are provided for both ends of each eyepiece. A soft protective drawstring-equipped velvet storage bag is standard equipment with each.

This 5-element super-wide angle 15mm SWAN EP’s panoramic views at 72 deg. F.O.V. will leave you speechless!
For day and night! A very useful focal length which every user should have.

Your Window on the Sky!
• Outstanding super-wide field of view: 72° F.O.V.
• Fully Multicoated lenses for excellent transmittance.
• Reduced chromatic aberration.
• Improved sharpness and contrast throughout the field.

Impressive Performances
•Fully internally blackened (lens edges and internal spacers).
• No flaring or ghosting on high-contrast objects.
• Parfocal.

Comfortable
• Soft rubber eyecup.
• Long eye-relief: 14mm.
• No internal reflections, kidney beaning, pin-cushion or other distortions.

Terrific Fit and Finish
• High-resistance anodized black barrel.
• Smooth design for no hook up in your focuser.
• Threaded for filters’ usage.

 

 

6. Vixen NLV 2.5mm Eyepiece

 

The Vixen NLV Series Eyepieces feature comfortable long 20mm eye-relief, simple twist-up eye cups for adjusting the best eye-point and high grade Lanthanum glass for clear and high contrast viewing. All optics are multi coated. Made in Japan.

Important note: Depending on your telescope, this eyepiece may provide magnifications that are too high! While it can be very useful for viewing the Sun, Moon, brighter planets and terrestrial objects, it is not for everyone or for common viewing conditions.

Before buying, please make sure that you are using realistic magnifications with your telescope. A good rule of thumb is that under very good conditions and with a very good telescope, the maximum power you will be able to use is about 50x of magnification per inch of telescope aperture. With average telescopes and/or average conditions, you might be limited to 30x of magnification per inch of telescope aperture. So for example, if you have a 4" telescope, under typical conditions you might typically use 4x30 = 120x of magnification, and 4x50 = 200x of magnification at best. If your telescope has a focal length of, say, 1200mm, then this eyepiece will result in a magnification of 1200 / 5 = 240x which is probably too much for this telescope.

Also, when you magnify an object, its light is spread over a larger area. Since the brightness of the object being viewed hasn't changed, this means that the image you see will be fainter. Double the magnification and the image will get 4 times fainter. This is a basic law of physics, but people often forget this and complain that the "image is not bright enough" when they increase the magnification to very high powers.

Boosting the magnification beyond the recommended maximum for your telescope aperture is not realistic. This is bound to result in image break-down, causing faint, fuzzy images, focusing difficulties, increased color around objects and general disappointment. Use the eyepiece in the right settings and with the correct expectations, and you will enjoy it.

 

Eyepiece Series NLV Lanthanum
Focal Length 2.5mm
Barrel Size 1.25" (31.7mm)
Apparent Field of View (Mfg Specified) 45°
Eye Relief (Designed) 20mm
Filter Threads Standard 1.25" Filter Thread (M28.5 x 0.6)
Coatings Multi-Coated
Lens Elements 8
Lens Groups 4
Barrel Safety Recess Yes
Barrel Type With safety undercut
Protective Plastic Storage Container Discontinued Item
Protective Plastic Storage Container Size Agena 52x80mm
Weight 5.54 oz

 

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