Sky & Telescope - March 2021 - 70

S&T Test Report

on the SkyGuider Pro, which significantly improves your ability to precisely
frame your subject. In tests with the
new Wi-Fi-enabled Star Adventurer 2i,
autoguiding proved almost essential,
as it did with the scope mounted on
the SkyGuider Pro, with two-minute
exposures at ISO 3200 working well to
ensure no declination drift.
So, yes, in a pinch the RedCat can be
used with a camera tracker. However,
for use at home or any site you can drive
to, a far more solid choice is a full German equatorial mount. I tested the RedCat on Sky-Watcher's new lightweight
EQM-35 mount ($725). The improved
tracking and dual-axis guiding allow
longer exposures at lower ISOs, producing images with less noise and wider
dynamic range. When shooting with
focal lengths of 250 mm or more, having Go To and electric slow-motion controls make finding and framing targets
so much easier than with a tracker.

Recommendations
Unless airline portability is paramount,
I recommend using the RedCat on a full
German equatorial mount. Even a lightweight mount will yield better images
more consistently than using the Red-

S Left: An ideal combination for portability and affordability in a deep-sky imaging system is
pairing the RedCat with Sky-Watcher's EQM-35 Go To mount. Right: The RedCat comes in a
zipped, padded case with cutouts for accessories. With its accessory handle attached, the tube
doesn't quite fit.

Cat on a small camera tracker pressed
to or beyond its limits. Many influential
but novice YouTubers have yet to learn
just how important a solid mount is for
deep-sky imaging.
By contrast, bigger isn't always better
with optics. The little RedCat is a fine
example of a small astrograph that is
easy to use yet can produce publicationquality results. For an advanced astro-

photographer, the RedCat can serve
as a wide-field complement to a larger
telescope. For the beginner, the RedCat
can provide top-class images without
breaking the bank. But do match it to a
solid mount.

„ See more of Contributing Editor ALAN
DYER's images, tips, and product reviews
on his website at amazingsky.com.

W Ignoring the clash of colors, the Sky-Watcher Star Adventurer 2i serves as a good
mount for situations in which portability is important.
T As a test of this compact combination, the author mounted the RedCat with the EOS
Ra camera on a Sky-Watcher Star Adventurer 2i tracker to shoot a set of 18 two-minute
autoguided exposures at ISO 3200. It worked!

70

MARCH 2 021 * SK Y & TELESCOPE



http://www.amazingsky.com

Sky & Telescope - March 2021

Table of Contents for the Digital Edition of Sky & Telescope - March 2021

Contents
Sky & Telescope - March 2021 - Cover1
Sky & Telescope - March 2021 - Cover2
Sky & Telescope - March 2021 - 1
Sky & Telescope - March 2021 - Contents
Sky & Telescope - March 2021 - 3
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