Galactic Nova ASASSN-17hx is now an easy object: will brighten further? – 13 July 2017
In less than one month, the galactic nova ASASSN-17hx has increased its brightness of about 2 full magnitudes, being now accessible with small telescopes and binoculars. Below is a new image and an animation, showing this evident changes, as well a couple of star charts to find the nova.
The image above is the average of five, 60-seconds exposures, unfiltered, remotely taken with “Elena” (PlaneWave 17″+Paramount ME+SBIG STL-6303E) robotic unit available at Virtual Telescope. The image scale is 1.2″/pixel.
Using shorter exposure images, to avoid saturation of the source, we measured a magnitude of 10.0 (unfiltered, R-mags for the reference stars from UCAC-4). Compared to our previous, 23 June observations, the nova ASASSN-17hx increased its brightness of 1.7 magnitudes. Visually, it should be about 0.5 mag. fainter (source: AAVSO), still an easy target, within the possibilities of very small telescopes/binoculars (60 mm or so in diameter).
Below in an animation showing how the transient increased its brightness from 23 June to 13 July.
Those wishing to see this nova, can use the maps below: the first one shows the whole Scutum constellation, while the second one is a close-up (a couple of degrees wide), helping the identification at the telescope.
Of course, we plan to continue monitoring this nova, to see if it increases its brightness even further.
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