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.

Galactic nova ASASSN-17hx in Scutum: 13 July 2017

Galactic nova ASASSN-17hx in Scutum: 13 July 2017

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.

Galactic nova ASASSN-17hx in Scutum: 23 June vs. 13 July 2017 - click for higher resolution

Galactic nova ASASSN-17hx in Scutum: 23 June vs. 13 July 2017 – click for higher resolution

 

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.

Location of ASASSN-17hx in Scutum

Location of ASASSN-17hx in Scutum

 

Location of ASASSN-17hx in Scutum: close-up

Location of ASASSN-17hx in Scutum: close-up

Of course, we plan to continue monitoring this nova, to see if it increases its brightness even further.

Back to “Novae” page

Support The Virtual Telescope Project!

If everyone reading this right now would donate something, our fundraiser would be done in a few days. Please, donate and receive a stunning, LIMITED EDITION image of the eclipsed Moon rising above the Colosseum in Rome and one of a potentially hazardous asteroid taken by the Virtual Telescope, specifically made for supporters like you!

donate now (you can adjust the amount later)

 

Comments

comments

You may also like...

Leave a Reply

Your email address will not be published.

Follow

Get every new post on this blog delivered to your Inbox.

Join other followers: