Apochromatic

Many amateurs have discovered that the combination of a small rich field refractor, a 600 apochromatic refractor, and a 1200 Newtonian makes for the ultimate in observing equipment. ❋ Unknown (2009)

Threads up to about one twenty-thousandth of an inch in diameter may be sufficiently well measured by means of a Zeiss "4 centimetre apochromatic object-glass" and an eyepiece "No. 6" with sixteen centimetre tube length. ❋ Richard Threlfall (N/A)

Although with the increase in power it is correspondingly difficult to combine all these corrections in one objective, they are brought to a high pitch of excellence in the present-day "achromatic" objectives, and so remove the necessity for the use of the higher priced and less durable apochromatic lenses. ❋ Unknown (N/A)

Zeiss prepares a compensating eyepiece micrometer for use with his apochromatic objectives, the divisions of which are so computed that ❋ Unknown (N/A)

For the telescope and camera buffs out there, Legault says the images were produced using a Takahashi TOA-150 6-inch apochromatic refractor focal length 3600mm on an EM-400 mount, with a Baader Herschel wedge. ❋ Unknown (2011)

Now fully integrated into CODE V, the Glass Expert tool uses a unique algorithm to find the best set of real glasses for a user's lens design that provides superior color correction including the generation of apochromatic systems while considering factors such as glass transmission, cost, weight and other criteria.

Mamiya continues to be a pioneer by continually improving and refining the finest professional photographic products with state-of-art advancements such as superior apochromatic lens technology and practical, ergonomic camera design and function. ❋ Unknown (2010)

Control of chromatic aberration is also improving, thanks to dropping prices of low - and super-low-dispersion apochromatic glass. ❋ Unknown (2009)

You can, for example, buy semi-plan apochromatic objectives and plan achromat objectives. ❋ Unknown (2009)

The level of color correction is specified as either achromatic or apochromatic. ❋ Unknown (2009)

Apochromatic means "free of chromatic and spherical aberration" (e.g. an apochromatic lens). ❋ Unknown (2008)