Imaging the Southern Sky by Stephen Chadwick & Ian Cooper

Author:Stephen Chadwick & Ian Cooper
Language: eng
Format: epub
Publisher: Springer New York, New York, NY

NGC 7098

Constellation

Octans

RA

21 h 44 min 18 s

Dec

−75° 07′

This is probably the best galaxy in the constellation of Octans. It is a barred-ring spiral galaxy but visually only the bar region is easy to see. But at high powers using a large aperture telescope the faint ring structure is revealed. This galaxy shines at an overall magnitude of 11.3.

Imaging

At 7′ × 3′, NGC 7098 is a relatively small galaxy and therefore needs a long focal length in order to capture any detail. Any camera should be able to capture at least some of the galaxy but the arms are much fainter than the core so extensive exposure maybe necessary. However, avoid saturating the core or else take a series of shorter exposures as well that can then be layered in order to restore core detail.

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