William Optics Apochromatischer Refraktor AP 61/300 RedCat 61 OTA

€1.790,00

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🔭 William Optics RedCat 61 Apochromatic Astrograph OTA

One of the most popular compact astrographs in modern astrophotography, the RedCat 61 pairs a 61mm apochromatic triplet lens with a fast f/4.9 focal ratio in a strikingly compact, all-metal tube. Loved for its portability and pinpoint star images, it has become a favourite among imagers who want big, wide-field results from a small, travel-friendly telescope.

🔭 61mm Apo Triplet ⚡ Fast f/4.9 📸 Astrograph Design 🌌 Wide-Field Nebulae & Milky Way 🧳 Ultra-Portable 🔧 OTA Only

⭐ Quick Overview

Best For

Astrophotographers who want a compact wide-field imaging setup
travel astrophotography
Milky Way and large nebula imaging

Observing Targets

Large nebulae
wide star fields
Milky Way regions
star clusters

Main Advantages

Compact all-metal design
fast f/4.9 apochromatic triplet
minimal chromatic aberration
straightforward imaging train
extremely popular in the astrophotography community

A Compact Astrograph That Punches Well Above Its Size

The RedCat 61 has built a strong reputation among astrophotographers for combining genuine apochromatic image quality with a remarkably compact, self-contained design. Instead of a traditional long tube with a separate focuser and corrector, the RedCat integrates everything into one sleek, all-metal barrel, making it easy to mount, balance and travel with.

Its 61mm triplet apochromatic lens delivers tight, round stars across a wide, flat field, while the fast f/4.9 focal ratio keeps exposure times manageable even on smaller tracking mounts.

🌌 What Can You Image With The RedCat 61?

🌌 Large Nebulae

Wide targets like the North America Nebula and Rosette Nebula fit comfortably in the field.

✨ Milky Way Regions

The wide, fast field is ideal for rich star-field and Milky Way imaging.

⭐ Star Clusters

Larger open clusters render beautifully across the flat field.

💡 Why Apochromatic Triplet Optics Matter

Apochromatic lenses use special low-dispersion glass elements to bring red, green and blue light to a common focus, virtually eliminating the colour fringing that can affect simpler achromatic refractors. For astrophotography, this means tighter, more natural-looking stars without the need for extensive colour correction in post-processing.

📸 Purpose-Built Astrograph Design

📸 Fast f/4.9 focal ratio for efficient imaging

🔧 Integrated design with minimal additional adapters

🧳 Lightweight enough for compact star trackers

🌌 Flat field suited to full-frame astronomy cameras

⭐ A Favourite Among Imagers For Good Reason

Where larger, heavier astrographs demand a substantial mount and lengthy setup, the RedCat 61 has become known for delivering excellent wide-field results from small, portable tracking mounts — a major reason for its enduring popularity in the astrophotography community.

🎯 Perfect For

📸 Astrophotographers

A compact, high-quality option for wide-field deep-sky imaging.

🧳 Travel Imagers

Small and light enough to pack alongside camera gear.

⭐ Imagers Upgrading From A Camera Lens

A natural step up in image quality and flexibility.

📸 Built Exclusively For Astrophotography

The RedCat 61 is sold as an optical tube assembly without a mount, intended to be paired with a compact equatorial tracking mount and an astronomy camera or modified DSLR. It is not designed for traditional eyepiece observing, but rather as a dedicated imaging instrument.

💡 Imaging Tips For Best Results

Use a sturdy, well-balanced tracking mount appropriate for the combined weight of the tube and camera.
Focus carefully using a Bahtinov mask or software-assisted focusing.
Allow the lens to reach ambient temperature before critical focusing.

📊 Technical Specifications

Brand	William Optics
Model	RedCat 61
Optical Design	Apochromatic Triplet Refractor
Aperture	61mm
Focal Length	300mm
Focal Ratio	f/4.9
Delivery Format	Optical Tube Assembly (OTA), mount not included
Recommended Accessories	Compact equatorial tracking mount, astronomy camera

📦 Included Accessories

📦 RedCat 61 optical tube

📦 Carry case

📦 Tube rings

📦 Manual

❓ Frequently Asked Questions

❓ Does this include a mount?

No, it is sold as an optical tube assembly for use with a separate tracking mount.

❓ Is this suitable for beginners in astrophotography?

It is best suited to imagers with some experience in tracking mounts, though its compact design makes it a popular second telescope.

❓ Can I use it visually?

It can technically be used with an eyepiece, but it is optimised for imaging.

⭐ Why Buy From MJKZZ?

✅ Genuine William Optics product

🚚 Fast European shipping

🔒 Secure payment options

💬 Expert customer support

📦 Carefully packed shipment

Within the EU, the goods usually arrive within a few working days. Deliveries outside of the EU can take from just over a week to two weeks. Even an exchange or return within 14 days can be handled more quickly, cheaper and less complicated on the MJKZZ.DE page, if the items only need to be sent back to Germany/Austria. For large orders OUTSIDE of EU contries, it is possible that the shipping costs need to be calculated manually becasue of insurance. But we only charge the real shipping costs!

If you are ordering OUTSIDE of EU: Please contact us to place your order without VAT. We will send you an invoice excluding 20% tax.