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PREORDER Optolong L-Pro Deep Sky Filter - M77

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SKU

OP102-M77

ผู้ผลิต

Optolong

จำนวนในสต๊อก

เหลือ 1 ชิ้น

น้ำหนัก

50.00 g

ราคาของเรา

฿9,500.00

ตัวเลือก

จำนวน (เหลือ 1 ชิ้น)

(จาก 1 ถึง 1)

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A. About Optolong's L-Pro FIlter

The Optolong L-Pro (L-Professional) broadband filter is designed to improve the visibility of various deep sky objects. It does this by:

Selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lighting (including mercury vapor lamps, both high & low pressure sodium vapor lights, and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow)).
Being highly transparent to the main nebula emission lines at OIII (496nm and 500nm), H-beta (486nm), NII (654nm and 658nm), H-alpha(656nm) as well as SII (672nm)

Unlike other light pollution filters such as UHC and CLS, the L-Pro is multi-bandpass filter which offers better color balance by maximizing the transmission band. The balanced transmission allows astrophotos to be taken with minimal color cast in broadband emission objects such as galaxies, reflection nebulae and globular star clusters. L-Pro is an excellent choice for light pollution suppression.

B. Main Uses and Performance

Suitable for enhancing the contrast and details for both visual and photograghic purpose at urban and suburban areas with heavy light pollution.
Suitable for color CCD cameras and unmodified DSLRs.
Works well on most emission nebulae, reflection nebulae and dark nebulae.
L-Pro filter has a very low transmission reduction rate against continuous spectrum space objects, and thus is quite effective in suppressing light pollution sources when shooting galaxies, reflection nebulae and globular star clusters. The same holds true for visual star observations.

C. Spectral Curve Transmission Characteristics

High transmission of main nebula emission lines:

H-beta 486.1nm, OIII 495.9nm and 500.7nm, H-alpha 656.3nm, and SII 672nm.

Precise and high blocking of major transmission lines of artificial light pollution:
- Hg (Mercury) at 435.8nm, 546.1nm, 577nm, and 578.1nm.
- Na (Sodium) at 598nm, 589.6nm, 615.4nm, and 616.1nm.
It also blocks out infrared wavelengths (700-1100nm) so a separate IR cut-off filter is not required for imaging applications.

D. Technical Specifications

Both surfaces are fine optically polished, accurate to 1/4 wavelength or better, and parallel to within 30 seconds or arc.
Very high surface quality of 60/40 or better (US Military Spec MIL-O-13830).

E. Optical Coating Specifications

Multi layer anti-reflection coated.
Non-cementing optical substrate coating.
Electron-beam gun evaporation with Ion-assisted deposition coating technology for durability and resistance to scratching, as well as stability on CWL (central wavelength) so that there is no deviation due to temperature changes during use.
Precise and homogeneous coatings ensure high values of desired passband and blocking of unwanted offband.
Every single filter is tested and passed by Optolong before shipping to dealers.

F. Other

Precision CNC-machined metal filter cell with sand blasted black anodized finish, anti-reflection treatment, and laser engraving.
High quality protective plastic storage case.

WARNING: Optolong filters are not designed for direct solar observation. NEVER use these filters for observing the Sun, or permanent eye and equipment damage will result.

Additional Information

L-Pro Spectrum and Characteristic

How to read the chart?

▲The horizontal axis is the Wavelength in Nanometers(nm).

▲The vertical axis is transmission in %.

▲The RED line shows the transmission of the filter. The artifical emission lines are shown in ORANGE. And the emission lines from constellation are shown in GREEN.

Optolong L-Pro Performance

I Comparason image was shot by Arnaud Besancon

All the pictures have been realised with 5D3 Astrodon modded and Samyang 24mm F1,4 at F2, 13s exp. time,3600 isos.

All the pictures are raw,without post-process
.

II The Vortex galaxy by Luca Fornaciari Astrophotography

Optolong Astronomy Filter L-Pro 2''

III Ran into Red Sprite again©Vincent Cheng

The Red Sprite is a TLEs (Transient Luminous Events) from the atmosphere, and is part of a family of small creatures that also include even harder to photograph, from rogue sprites to blue jets.

by Optolong_filter 2" L-Pro filter

Ⅳ When the skies were absolutely STEADY, Jim Mayercak shot this Luna

cannot recall EVER having such good "seeing" conditions. The most beautiful Lunar shot to date.Celestron CGEM DX 1100 EDGE HD ZWO ASI071PRO

Optolong L-Pro filter

V Here the final Image of comet 46/P Wirtanen and the Pleiades, shot by Blake Estes.

This imaging run ended up being a marathon that took about 22 hours of processing, using Optolong L-Pro filter for imaging. Its absolutely perfect!

Ⅵ. Veil Nebula shot by Andrea Andreotto Maggi with Optolong L-Pro filter 2''

The L-Pro filter filter allowed me to obtain long poses without saturating the stars and to obtain a good separation between the nebula and the sky background while keeping the colors unaltered.

VII. M33, imaged by Valerio Avitabile(Italy)

Tecnosky apo 102/714 ridotto a 585mm
EQ6-R mount
Asi294 pro raffreddata a -10°
Guida con Artesky 60/240 e Asi224mc

85x300sec gain120 con filtro Optolong L-Pro 2"
41 Dark ,35 flat, 25 darkflat

Astro photography tools, Phd2 Guiding, eqmod, PixInsight 1.8 e photoshop

About Optolong

While Optolong is a relative newcomer to the astronomy industry, they are no strangers to optics and filters. Optolong is a division of Yulong Optics Company, a high tech company specializing in optical filter design and production. Their products include bandpass filters, flourescence filters, edge filters, longpass and shortpass filters, beam splitters, anti-reflection coatings, optical mirrors and, of course, astronomical filters.

Established in 1999 and based in Kunming City, China, Optolong/Yulong provides nearly 2000 types of optical filter coatings annually to customers worldwide in a wide variety of industries and applications.

แว่นขยาย Levenhuk Zeno 90 Fresnel Lens, 2.5x, 48x45 mm, Metal

LED illumination. Magnification: 2.5x. Lens dimensions: 48x45 mm

฿392.00

สินค้าหมด

SALE

William Optics Adjustable reducer flattener Flat73R for Z73

New, dedicated 2" flattener by William Optics optimized for use with their Z73 Zenithstar OTA. Designed for APS-C size or smaller imaging chips (not for use with full-frame cameras).

Features an M63 male thread for a direct threaded connection to the Z73 on the telescope side.
On the camera side, the flattener has a male M48x0.75 thread. You can use your Canon or Nikon DSLR directly with the use of an optional M48 camera-specific T-ring (sold separately). With this, your camera chip will be placed at the correct 55mm working distance.
Note that you cannot use this with the smaller T rings that have a 42mm T thread.
The WO Flat73R also has a female M48x0.75 (2" filter thread) on the inside to which you can attach standard 2" filters. To access this thread, you need to unscrew the telescope adapter portion of this flattener.
A very neat fature of this item is that a rotator/camera angle adjuster is built into the mechanism of this item, making a separate rotator unnecessary.

฿9,990.00

Antlia OIII 3nm Pro 36mm

Antlia OIII 3nm Pro 36mm

฿10,990.00

ZWO D32 AR protect window thickness 2mm

ZWO D32 AR protect window

Technical Parameter:

Diameter: 32mm

Type: AR window

Thickness: 2mm

Flatness: 1/4 λ

Match Model：

ASI1600 series, ASI294 series, ASI183 series.

฿990.00

iOptron Illuminating LED CEM26/GEM28/CEM40/GEM45 AccuAlign Polar Scope

Illuminating LED and cable for iOptron AccuAlign^TM dark filed illuminated polar scope.

ONLY works for CEM26/GEM28/CEM40/GEM45 AccuAlign^TM polar scope.

฿1,290.00

$SVBONY SV188 90-Degree Zenith Mirror Diagonal for Refractors, 1.25"$

SVBONY SV188 90-Degree Zenith Mirror Diagonal for Refractors, 1.25"

Suitable for refractors, not suitable Newtonians
Precisely machined to achieve and maintain good optical alignment
Black thread design inside the lens barrel prevents glare; makes image clearer

฿999.00

สินค้าหมด

SVBONY1.25" Extension Tube เพิ่มระยะลำกล้อง 70mm สำหรับกล้องดูดาวขนาดฟอกัสเซอร์ 1.25"ทุกรุ่น

ใช้เพื่อช่วยให้สามารถฟอกัสภาพให้ชัดในกรณีที่ฟอกัสเซอร์ไม่สามารถขยับถอยไปมากเพียงพอที่จะได้ภาพที่ชัดได้ (อาจเกิดเมื่อพยายามฟอกัสวัตถุภาคพื้นดินที่อยู่ระยะใกล้ เป็นต้น)
สามารถใช้ส่องตรง (ไม่ต่อ diagonal) กับกล้องหักเห หรือใช้กับกล้องสะท้อนที่ออกแบบมาสำหรับถ่ายภาพ (ซึ่งปกติระนาบการฟอกัสสำหรับการส่องดูจะอยู่ไกลไปข้างหลังและไม่สามารถฟอกัสได้ถ้าไม่มี extension tube)
ขนาด barrel 1.25 นิ้ว สามารถใช้กับกล้องดูดาวหรือกล้องส่องทางไกลที่มีขนาดฟอกัสเซอร์, diagonal หรือ eyepiece holder 1.25 นิ้ว
มี compression ring ที่ทำด้วยทองเหลืองที่ช่วยยึด eyepiece ไม่ให้หลุดออกจาก tube โดยไม่ทำให้เป็นรอย
Body ผลิตจากโลหะ มีเกลียวสำหรับรองรับฟิลเตอร์ 1.25" มาตรฐาน
มีการกลึงภายในเพื่อลดแสงสะท้อน เพื่อเพิ่ม contrast ของภาพ

฿690.00

เครื่องช่วยตั้งแนวกระจก SVBONY Cheshire Collimating Eyepiece, 1.25"

Designed for accurate collimation of Newtonian reflector telescopes
Made of high-quality aluminum material. Anti-rust, wear-resistant, and durable
CNC precision manufacturing, oxidation black, steel cross wire. Crosshairs are clear and easy to use
Reduce light reflection to improve the clearness of view

฿990.00

ตัวแปลง SVBONY Prime Focus + Variable Eyepiece Projection Camera adapter, 1.25"

Composed of two detachable parts: a prime-focus adapter for prime-focus photography, and a fixed-length or variable extension tube for eyepiece-projection photography.
Supports maximum of 46mm eyepiece diameter
Connects with SLR & DSLR Camera for Eyepiece Projection Photography
Has a handy laser engraved Extension Scale
The 1.25-inch Extendable camera adapter is made of black anodized aluminum and is suitable for all standard 1.25" astronomical telescopes
Easy to connect camera body (needs T-Ring) to a reflector or refractor telescope for either prime-focus or eyepiece-projection photography.
Can install filter (pipe thread) and compatible with the 1.25-inch eyepiece.
A thumbscrew in the extension tube holds the telescope eyepiece in place. This combination of prime-focus and eyepiece-projection camera adapter has a sliding barrel design that allows variable projection distances.
Built-in protective pressure ring to prevent eyepiece barrel from being scratched.

฿1,190.00

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