{"id":16639,"date":"2026-09-09T14:45:07","date_gmt":"2026-09-09T12:45:07","guid":{"rendered":"https:\/\/deep-space-astronomy.ch\/?post_type=product&p=16639"},"modified":"2026-10-28T12:05:09","modified_gmt":"2026-10-28T11:05:09","slug":"zwo-oag-l","status":"publish","type":"product","link":"https:\/\/deep-space-astronomy.ch\/en\/product\/zwo-oag-l\/","title":{"rendered":"ZWO OAG-L"},"content":{"rendered":"
\n

ZWO OAG-L: Large-Prism Optical Splitter for Astrophotography<\/h2>\n

Guide directly through your telescope with the
\nZWO OAG-L<\/strong>. This optical splitter splits off a portion
\nlight to power a guidance camera, while allowing
\nThe main camera takes a picture of your target. It avoids the
\ndifferential deflections between a separate guide ring
\nand the main instrument.<\/p>\n

Large prism and precise focusing<\/h3>\n

Sound 12 \u00d7 12 mm prism<\/strong> provides a useful insight
\n11.7 \u00d7 8.3 mm. The built-in helical focus mechanism makes it easy to
\nAdjusting the guide camera to the 31.75 mm slide.<\/p>\n

Interfaces and Connections<\/h3>\n\n\n\n\n\n\n
Telescope or corrector<\/th>\nM48 \u00d7 0.75 female thread via the adjustment plate
\nof the included M48 tilt head.<\/td>\n<\/tr>\n
Main camera or filter wheel<\/th>\nScrew-on mounting on a ZWO-compatible interface.
\nIntended for use specifically with filter wheels
\nCompatible with ZWO EFW 36 mm and 2\u2033.<\/td>\n<\/tr>\n
Guidance camera<\/th>\n31.75 mm (1.25\u2033) sliding camera mount with focus adjustment
\nHelical, compatible with ZWO ASI Mini cameras.<\/td>\n<\/tr>\n
Installation without a filter wheel<\/th>\nA specific adapter is required, depending on the camera.
\nZWO offers an M54 adapter for the 15 mm OAG-L,
\nSold separately, for compatible configurations.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Thickness and Backfocus Calculation<\/h3>\n

The body of the OAG-L measures 17.5 mm thick<\/strong>.
\nThe M48 turntable adds 5 mm<\/strong>, or
\n22.5 mm with this plate installed<\/strong>.
\nAdditional connections and the camera cable must
\n...should also be included in the calculation.<\/p>\n

For a corrector that imposes a backfocus of 55 mm, check
\nthe entire assembly, from its reference surface to the sensor.
\nFocus should be achievable simultaneously on
\nthe main camera and the guidance camera.<\/p>\n

Compatibility with the ASI585MC Pro<\/h3>\n

L'ASI585MC Pro<\/strong> requires a mechanical modification
\nspecific: its M42 connector does not attach directly to
\nthe rear interface of the OAG-L. The choice of parts depends on
\nthe corrector and the available spacing. The M54 adapter
\nBeing optional does not, in and of itself, constitute a guarantee of
\nCompatibility with this camera.<\/p>\n<\/section>\n

Documentation and Compatibility: ZWO official data sheet<\/a>.<\/p>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"

Use the ZWO OAG-L to guide directly through your telescope. .<\/p>\n

Available by special order\u2014estimated delivery time: 2 to 3 weeks<\/p>","protected":false},"featured_media":16861,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[893],"product_cat":[606],"product_tag":[],"class_list":["post-16639","product","type-product","status-publish","has-post-thumbnail","product_brand-zwo","product_cat-diviseurs-optiques-astrophotographie","first","instock","taxable","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product\/16639","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/comments?post=16639"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media\/16861"}],"wp:attachment":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media?parent=16639"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_brand?post=16639"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_cat?post=16639"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_tag?post=16639"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}