{"id":7705,"date":"2025-02-12T21:27:22","date_gmt":"2025-02-12T20:27:22","guid":{"rendered":"https:\/\/telescoop.rabdevelopment.nl\/?post_type=product&p=7705"},"modified":"2026-10-29T11:36:16","modified_gmt":"2026-10-29T10:36:16","slug":"omegon-ac-70-700-az-2","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/omegon-ac-70-700-az-2\/","title":{"rendered":"Omegon AC 70\/700 AZ-2 Achromatic Refractor"},"content":{"rendered":"

The AC 70\/700 AZ-2 is an achromatic lens telescope with a 70 mm aperture and 700 mm focal brandlength (f\/10) on the azimuthal AZ-2 mount with an aluminum tripod. In the Omegon AC series it stands between the 60 mm model with a reversing lens and the 102 mm model on the AZ-3: 36% more light than the 60 mm model, and with f\/10 a longer brandfocal length per millimeter opening than the 102 mm model (f\/6.5), which keeps the chromatic edge of an achromatic lens small. Two eyepieces, a 2x Barlow lens, a red dot viewfinder and a diagonal sight are included in the box, so on the first evening you don't need anything else. How the series of these merk relate to each other is explained in the Omegon merkguide<\/a>.<\/p>\n\n\n

What do you see through the AC 70\/700?<\/h2>\n\n\n
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\"Omegon<\/figure>\n\n<\/div>\n\n\n
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Moon: craters, mountain ranges and the shadow line at 70x with the 10 mm eyepiece; at 140x (10 mm with the Barlow) the small craters at the bottom of the large ones, as long as the air is calm. Along the bright edge of the moon you see a thin bluish-purple rim; that is the chromatic aberration of an achromat and is characteristic of this lens type. Jupiter: the two dark main bands and the four large moons, which change place from evening to evening. Saturn: the ring apart from the planet at 70x, with the moon Titan as a small star next to it. Venus shows its disk shapes; Mars remains a small orange disk. Deep-sky: the Pleiades fill the field of view at 35x, the Orion Nebula shows the four Trapezium stars in a gray nebulosity, Albireo splits into a yellow and a blue star, and from a dark spot the Andromedan Nebula is an oval light spot. With the 20 mm eyepiece (35x) you see about 1.4 degrees of sky, almost three times the moon. Nebulae and galaxies are seen in gray tones, not in color. From a city or village with street lighting, the moon, planets, double stars and star clusters remain; nebulae and systems require a dark spot. The highest meaningful magnification is approximately 140x, twice the opening in millimeters; in most evenings this is also the usable limit due to the air above the Netherlands and Belgium. What you can expect per object is stated in What do you see through a telescope?<\/a>, Jupiter through a telescope<\/a>, Saturn through a telescope<\/a> and The Moon through a telescope<\/a>.<\/p>\n\n<\/div>\n\n<\/div>\n\n\n

How does the AC 70\/700 differ from other 70 mm refractors?<\/h2>\n\n\n
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