Hi yesterdays night, i was observing SU CEP with my skywatcher 102 / 500 mm achromat refraktor
Looking for other variables in my FOV i saw that there is also V0437 CEP. (Type: LB Spec K5)
https://www.aavso.org/apps/vsp/chart/?fov=18.5&scale=F&star=v0437+CEP&o…
There is sitting another bulb of light right onto V0437 CEP! RA 21 49 20.99 DEC + 56 33 32.9
There is no star at the VSP search chart, or in stellarium 0.20.1 And with only 500mm focal lengt of my small refractor, this could not be a resolution artefact.
Is this an outburst? or a Nova? Even a Supernova? With Muniwin i measured around 10 mag vis. (TG) For V437 CEP i measured 9.33 mag vis (TG)
What are the next steps to verify this. This is my first: "Other bulb of photons-ligth next to a star."
Can anyone with more focal length take a look at it? To get a higher resolution and distuinguish the two lights.
kindly Bernhard
If you plot a smaller field of view (say 10 arc minutes) and use the DSS chart option, you will see two stars and not one as shown on your 18.5' computer plotted chart.
I would always use the DSS chart option when comparing to an image.
Gary
Hi Gary,
https://www.aavso.org/apps/vsp/chart/?fov=7.5&scale=G&star=v0437+cep&or…
do you mean the star marked with the red arrow?
But i think it is this one listed in stellarium?
Ahh ok i found the DSS option!
I did not know about this.
https://www.aavso.org/apps/vsp/chart/?fov=7.5&scale=G&star=v0437+cep&or…
Next time i will look there first (-:
false alarm...
(But this is leading to the qestion how to distinguish V437 CEP from the other, if it 's not shown in VSP? )
Hi Bernhard,
As good as VSP is (and it is brilliant) there will always be stellar omissions at many magnitude ranges. This is why if there is a query, it's always best to check with the DSS chart to see what's there. I often use the DSS 20 or 30 minutes charts for visual work too, and always for checking CCD fields.
Gary
Thank you Gary,
today i've learned another thing (-:
wbea