The 48 mm T-mount for Sony E-mount in Black adapter, by William Optics:

This high-precision T-mount adapter has 48 mm threads with outer hard black color anodizing and is made from high-quality aluminum material. It has been machined by CNC for a perfect fitting!

• This thorough kit of 2" telescope accessories presents an affordable introduction to lower-power, wide-field stargazing - ideal for anyone interested in exploring deep-sky objects
• Kit includes three 2" Orion DeepView telescope eyepieces - 42mm, 35mm, and 28mm focal lengths
• The included 2", 2x Barlow lens allows you to double the magnification of each included telescope eyepiece for versatile performance
• Included 2" Orion SkyGlow Broadband Filter helps combat light pollution so you can get the most out of your wide-field observations
• Everything fits nicely in the included pluck-foam accessory case

Features

• All metal mechanical structure
• Attaches to a camera tripod with 3/8” or 1/4” threads
• Payload 11 lbs (5kg) (balanced, with DEC mounting bracket, exclude CW)
• Silent tracking for smooth camera motion, perfect for long-term exposures
• Detachable alt-azi base with fine latitude and azimuth adjusters for easy polar alignment
• Includes iOptron iPolar^TM electronic polar scope
• 4 tracking speed (1X, 1/2X, solar and lunar). 1X celestial tracking for imaging the sky and stars; 1/2X tracking speed for imaging both the starry night and the landscapes at the same time
• Operation in both northern and southern hemisphere
• Quick slew (144X) for camera framing adjustment
• Built-in rechargeable battery for up to 20 hours of operation (20°C)
• Built-in ST-4 autoguiding port
• HBX port for external hand controller
• Micro USB port for power, charging and firmware upgrade
• Built-in shutter triggering port
• Padded carry bag included
• DEC mounting bracket
• Counterweight and CW shaft
• Vixen dovetail saddle for scope mounting
• Optional ball heads available separately (#3305A)
• Optional tripod (#3221)
• Optional Go2Nova® 8408 hand controller (#8408)
• Optional DSLR camera shutter trigger cable

PACKAGE CONTENTS

• SkyGuider^TM Pro camera mount
• Alt-azi base (installed)
• iPolar^TM electronic polar scope (installed)
• USB charging cable
• Padded carry bag
• DEC mounting bracket w/ camera mounting disk
• 1.35kg counterweight
• CW shaft

iOptron 3305A SkyTracker Ball Head (Black)

• Designed for users to mount and remove camera and lens quickly.
• Large aluminum alloy ball (1.5 inches, 39mm in diameter) provides super smooth movement and super strong grip. 360 degree panning. Head Tilt: +/- 90 degrees
• The safety stops on the quick release plate prohibit your camera from accidentally slipping out of the quick release adapter (easy to remove with hex wrench if desired). Also features 3-screw-position top plate.
• Screw size: 1/4 inch for camera; 3/8 inch for tripods. Also includes 1/4"-20 / 3/8"-16 tripod adaptor piece.
• Weight: 0.875 lb. Working Height: 3.875 inch. 2 Spirit levels. Load Capacity: 20 lbs.

iOptron SkyTracker Pro Counterweight Package

• Dovetail Plate - Counterweight Bar and Safety Cap - 1.35 kg Counterweight - Locking Handle
• iOptron SkyTracker Pro Counterweight Package

mount, tripod, camera, lens, ball head are not included.

Features

• On board rechargeable lithium ion battery for up to 10 hours of use
• 33lb primary payload and 10lb secondary payload capacity, with a mount weighing only 13lbs
• Whisper quiet low-power consumption stepper motors
• Go2Nova® 8407 hand controller featuring 212K+ object library with an 8 line illuminated LCD screen
• Zero backlash driver system
• Built-in WIFI adapter for full ASCOM, iOptron Commander^TM and Sky Safari wireless control
• Serial port for computer control and firmware upgrades
• Retractable counter weight shaft
• Position memorization at power interruption
• Die-cast aluminum body
• 3-Point easy level adjustment on tripod
• 6 inch dual dovetail saddle (Losmandy/Vixen styles)
• Stands a mere 10 inches tall (mount head only)
• Built-in 32-channel GPS receiver
• Automatic position and angular detection sensors
• Aluminum Hard Case
• 1X 10lb counterweight included
• 100 ~ 240V Battery Charger included
• LiteRoc 1.75 inch heavy duty stainless steel tripod included
• includes (8954) Alt lock levers
• Two year limited warranty ( 90 day for battery)
• Optional pier/Tri-pier

• Celestron’s top-performing altazimuth telescope system, the CPC Deluxe HD is a favorite among experienced amateur astronomers and the preferred telescope of the late Stephen Hawking
• 11-inch EdgeHD optical tube provides stunning views and sharp astroimages free of visual defects
• NexStar+ hand control and internal GPS guides users through the simple SkyAlign setup and features a 40,000+ object database
• Sturdy dual fork arm mount with upgraded gears and motors anchors the telescope for superior tracking and pointing accuracy
• Ready for serious astroimaging, CPC Deluxe HD features All-Star Polar Alignment and Permanently Programmable Periodic Error Correction when equipped with the HD Pro Wedge

• 0.5x focal reducer cuts the telescopes focal length in 0.5 times of original's to get a wider field of view
• Fully anti-reflection coatings on all air-glass surfaces for increased contrast
• The focal reducer is great for visual use for a bigger FOV and is indispensable when CCD imaging
• Fully metal structure design;both the ends of the interface part is 28.5x0.6 thread
• Directly connect the interface to the eyepiece;there is a very good performance in both visual and photography

Fully multi-coated eyepiece

The SLV Series of eyepiece feature a hexagonal shaped eyepiece for adjusting to the most comfortable eye point for viewing. The SLV eyepieces with high grade Lanthanum glass, deliver remarkably clear and high constrast star images to the edge of the viewing circle. The lenses are fully multi-coated for high light transmission.

• Align and control your telescope wirelessly using your smartphone or tablet with Celestron’s exclusive, free SkyPortal app for iOS and Android devices.
• Tap any celestial object you see in the sky to identify it instantly. Tap again and your telescope slews to that object, centering it perfectly in the eyepiece.
• Explore 100,000+ objects in SkyPortal’s database. While you observe, view astroimages and listen to audio descriptions for hundreds of the most popular objects including the planets, Orion Nebula, Hercules Globular Star Cluster, and more.
• Sky Tour feature generates a list of all the best stars, galaxies and nebulae to view based on your exact time and location.
• WiFi module is compatible with all current Celestron computerized telescopes and select older models. Unit does not require batteries or external power.

• The Celestron SkyPortal app can only be used for telescope control when paired with the SkyPortal WiFi module.

Includes These Celestron Technologies

• Compact mini guide scope designed for use with astrophotography telescopes up to 1500mm focal length
• Mini 50mm guide scope with bright, wide-field optics puts numerous potential guide stars in view so you'll never have to search for one!
• Adjustable-aim dovetail guide scope bracket installs on virtually any astrophotography telescope quickly and easily
• Very small and compact autoguiding system adds hardly any weight to an astrophotography setup and can conveniently be stashed in an accessory case between uses
• Designed for use with Orion StarShoot AutoGuider (sold separately) and other similar small-chip CCD autoguiders

• 127mm Maksutov-Cassegrain optical tube
• Multi-purpose alt-azimuth mount
• Adjustable height aluminum tripod with 1.25-inch diameter legs
• 11-pound payload capacity
• SynScan GoTo telescope mount with 42,900+ object database
• Built-in Wi-Fi
• Controlled with SynScan Pro app for iOS and Android
• Freedom Find™ dual-encoder technology
• DC operation (batteries not included)

• Cut-off depth ≥OD4; highly efficient in blocking urban light pollution or other background light; use this multi-bandpass filter for astrophotography in urban without traveling long distances to the suburbs;
• Compatible with 99% astrophotography systems; if you have different astrophotography systems, no need to prepare dedicated filters, one SV240 can meet your needs due to its high compatibility;
• Photoing more kinds of targets; SV240 multi-narrowband filter select Ha,OIII,H-Beta wavelength effectively can cover almost photoing needs;
• High transmittance; the >90% transmittance in core wavelength of Ha,OIII, H-Beta, more objects for your astrophotography by using this multi-bandpass filter;
• Multi-bandpass filters; without multiple filters' combination for colorful images; rich color in your lens;
• Resistant of BORTLE 8; the multi-narrowband filters can be resistant from Bortle 1 to Bortle 8 cities, suitable for almost all urban;
• 300-1100 mm working wavelength; the wider coverage of this multi-narrowband filter allows it to have a strong ability to tack light pollution.

Note: Optical filters that use infrared light often cause halos in the NIR region; which are exacerbated by the halos produced by the filter itself.

• SVBONY user adjustable laser collimator;allows anyone easily collimate 1.25'' and 2'' reflector telescopes;come with removable 2" adapter;built with metal material;make alignment no longer boring and time consuming
• Easy to use;accurate collimation in a few minutes provide a more clearer image;no longer have to go back forth;just watch the collimator from the mirror end of the scope and adjust the screws
• 7 brightness levels red laser beam;adjustable brightness;suit for different light conditions;amazing alignment in dark and day;so can get the better views possible from your reflector telescope
• Solid metal body;for a long term use;CR2032 battery included and comes with a full set of instructions with a step by step procedure on how to properly align a relfecting telescope
• Triple cemented of Lens;Improve the stability of red dot;Red laser with 7 brightness levels;Quick alignment;much faster than a manual collimator ; It's a great Halloween birthday christmas gift

الكتاب "الفلك من فناء منزلك" يهدف إلى تزويد القارئ بالمعلومات اللازمة لبدء مغامرته في رصد النجوم والفضاء. يشرح الكتاب بطريقة سهلة ومبسطة سبب حركة النجوم وكيفية استخدام التلسكوب. يندرج الكتاب تحت تصنيف الفلك والفضاء. ومن بين الكتب المشابهة لـ "الفلك من فناء منزلك" هي: - "الفلك للمبتدئين: دليلك المصور لدراسة السماء" لـ David J. Eicher. - "تعلم الفلك خطوة بخطوة" لـ Terence Dickinson. - "تصوّر الفضاء والفلك في العالم الإسلامي" لـ Nasser D. Khalili.

IR 850nm Pass Filter is suitable for IR sensitive cameras.

• Darkens the background during twilight.
• Imaging of bright planets, stars, and comets by day.
• Imaging of young stars in dust clouds and stellar nurseries.
• Filter thickness: 11mm.

• 6" Schmidt-Cassegrain optical tube assembly (OTA)
• Features Celestron's premium patented StarBright XLT optical coatings
• 1500 mm focal length (f/10)
• Tube constructed of durable and lightweight aluminum