Optolong 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 to broadband emission objects such as galaxies, reflection nebulae and globular star clusters. L-Pro is the best choice for light pollution suppression.

• Isolates emissions of nebulae into H-Alpha and OIII
• Compatible with DSLR, color/monochrome CMOS, and CCD cameras
• Muli-layers of anti-reflection coating
• High density sponge carton lining

• Inspire young stargazers with this beautifully illustrated children's astronomy book
• Join our astronaut guides on a tour through the Solar System and beyond
• Learn about constellations and the mythology behind them
• Amaze friends and family with fun astronomy facts
• 48 pages packed with colorful illustrations, seasonal star charts, and interesting information all about space and the stars!

The Celestron USB cable is compatible with all Nexstar controllers. It enables control of your mount from PC, Mac, or StellarMate. Simply connect the RJ9 plug to the RS232 port on the Nexstar handset and then connect it to your device via USB. You can use any planetarium program (e.g. KStars) to control the mount to slew to any object.

1.Plug: 12v DC (5.5mm DC
plug) to 5v type c
2.Cable: UL 2464 20awg/2c
3.output: 5V 3A
4.Cable length: 2M
5.Color: Black
6.Pure copper

• An indispensable reference guide for observing the "Red Planet"
• Identifies Martian features using classical albedo and modern nomenclature
• Second Edition lists Mars opposition and observable conjunction events from 2020 through 2026
• Recommends best filters for visual observation and astrophotography of Mars
• Plastic-laminated for durability, measures 25.25" x 11" when fully unfolded, and folds up to 8.5" x 11" for easy portability

• The meticulously detailed MoonMap 260 is a must-have for any backyard astronomer
• Map identifies over 260 lunar features including craters, valleys, ancient lava flows, mountain ranges, all successful US and Soviet lunar mission landing sites, and more
• Conveniently laminated for protection against dew, dirt, and the elements
• Measures 25.25" x 11" when fully unfolded, and folds up to 8.5" x 11" for easy portability
• Includes both correct-image and reversed "mirror image" maps of the Moon for easy use with binoculars, unaided eyes, or any telescope

• An ideal reference for observing ringed Saturn and its brightest moons
• Identifies atmospheric features of Saturn using standard nomenclature
• Updated Second Edition lists Saturn oppositions and observable conjunctions from 2020 through 2026, and shows ring inclination at opposition for each year
• Recommends best filters for visual observation and astrophotography of Saturn
• Plastic-laminated for durability, measures 25.25" x 11" when fully unfolded, and folds up to 8.5" x 11" for easy portability

ZWO Finder Shoe measuring 32 mm in width by 11 mm in height with a 60º angle. This dovetail base is included as standard equipment when you purchase the ZWO Mini Guide Scope. Offered here as an extra or standalone replacement.

المؤلف : د فهد العوضي

وضع كتاب مبادئ علم الفلك ككتاب لطلبة العلوم والتربية الخاصة في كلية التربية الأساسية التابع لهيئة العامة للتعليم التطبيقي حيث يشرح الكتاب أساسيات علم الفلك مثل قوانين الميكانيكا العامة والفلك وقانون الجذب العام لنيوتن وقوانين كيبلر المتعلقة بحركة الكواكب المجموعة الشمسية.

يسلط الكتاب الضوء على إسهامات بعض علماء الإسلام وإنجازاتهم التاريخية لعلم الفلك، بالإضافة إلى أبرز إنجازات علماء العصر الحديث.

This small but powerful device (in short PPBADV) is a welcome addition to our Powerbox product series. Proudly stands between Pocket Micro and Ultimate Powerbox v2. It has been designed to provide more advanced features than Pocket Powerbox Micro and especially a USB Hub that accepts up to 4 USB ports.

• The QHY294M camera has an 11.7 Megapixel, 4/3-inch, back-illuminated, cooled, monochrome CMOS sensor.
• On-chip binning has been unlocked.
• Short back of focus of 11.5 mm.
• The optical window has a built-in dew heater and the sealed CMOS chamber.
• The QHY294M has an internal 256MByte high-speed DDR3 image buffer.
• Fast 16.5 frames per second at high resolution (11.7 MP) with 14-bit A/D. 

• Flexible Viewing: Adjustable vertical and horizontal angles with full 360-degree rotation.
• Convenient Design: Eliminates the trouble of setting up a bulky tripod while viewing from your vehicle.
• Universal Mount: Standard UNC 1/4-20 thread compatible with most spotting scopes, binoculars, and cameras.
• Durable Build: High-quality all-metal body for long-lasting stability and use.

• Universal Fitting: Standard 1.25” (31.7mm) diameter compatible with any astronomical telescope with 1.25" focuser.
• High Magnification: 4mm focal length, perfect for detailed lunar and planetary observations.
• Ultra-Wide Field: 62° Aspheric field of view provides maximum detail and an immersive "lost in space" feeling.
• Premium Optics: Fully multi-coated (FMC) glasses for superior image contrast and high light transmission.
• Safe & Secure: Interface recess design prevents the eyepiece from accidentally falling out during use.

The SVBONY SV194 photography adapter is a precision-engineered tool designed to connect your Nikon SLR/DSLR camera to telescopes and other optical accessories. Featuring high-strength metal construction and versatile M42/M48 thread options, it ensures a secure, wobble-free connection for stunning astrophotography.

• Compatible with Nikon F-mount SLR and DSLR cameras.
• Dual threading options: M42*0.75 or M48*0.75 (T2/Wide mount).
• Full metal aluminum construction with impact resistance.
• Perfect for attaching lenses, telescopes, and microscopes.

SV606 Wireless Handheld 50X-1000X Stepless Zoom WIFI Digital Microscope is compatible with Windows, Android, and ios devices. WiFi support for Android 4.0 and above, ios8.0 and above, and 2.4GHz (8201.11b/g/n) wireless data transmission devices.