Nova in Cassiopeia

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SkyBrowser
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Re: Nova Cas brightens rapidly!

Post by SkyBrowser »

RMSteele wrote: Fri May 07, 2021 10:37 pm I even suspected a slight reddish tinge to the nova.
Would that mean anything significant?

Rain, cloud, cloud, rain forecast for the next couple of weeks here. But I'll make myself a magnitude comparison chart just in case I can dash out with the 8x50s!
RMSteele
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Re: Nova Cas brightens rapidly!

Post by RMSteele »

Skybrowser,
Would that mean anything significant? Yeah I'm developing cataracts. Not sure to be serious! It was just a slight impression and could have been due to factors extraneous to the nova, such as the moderate altitude/Earth atmospheric refraction or simple subjectivity.
Kind thoughts, Bob
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Re: Nova Cas brightens rapidly!

Post by RMSteele »

Bright in my 15x70 binoculars even in twilight tonight. Observed at 2127 UT. A fractional estimate as follows: 50 (3) V (2) 56. This gives 5.36 rounded up to a deduced magnitude of 5.4. Regards Bob. PS It looks pure white tonight
RMSteele
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Re: Nova Cas brightens rapidly!

Post by RMSteele »

Magnitude estimate at 2021 May 12 2154 UT with 15x63 binoculars is mag 5.48, rounded to mag 5.5. Note: observed in twilight through double glazed window. Easily seen. Reliability 1.
Regards Bob
RMSteele
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Re: Nova in Cassiopeia

Post by RMSteele »

A quick update. Seen for first time in a few days and the nova has faded a lot. My estimate at 2250 UT on 17 May 2021 is mag 7.5. Regards Bob
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Re: Nova in Cassiopeia

Post by SkyBrowser »

I had a quick look last night, using my 8x50s, but I couldn't really identify the nova - x8 isn't really enough to pick out the surrounding stars accurately. All I could say was that there was nothing brighter than the mag 5 star (4 Cas) just above M52. Looks like I missed the bright phase. I really need to get a monopod or something to help steady the view! And I was having to hide behind trees to cut out the moonlight.
RMSteele
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Re: Nova in Cassiopeia

Post by RMSteele »

I still make it mag 7.5 tonight (18/5/21) at 2218 UT. Bob
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Re: Nova in Cassiopeia

Post by RMSteele »

Estimated at mag 7.5 again at 2205 UT on 19/5/21, this time with 80mm f5 achromatic refractor x18. Bob
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Re: Nova in Cassiopeia

Post by RMSteele »

Estimated at mag 7.6 tonight (22/5/21) at 2245 UT in 80mm f5 refractor x18. Bob
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Re: Nova in Cassiopeia

Post by RMSteele »

Estimated at mag 7.5 tonight (26/5/21) at 2240 UT with 80mm F5 refractor x18. Bob
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Re: Nova in Cassiopeia

Post by RMSteele »

I estimated the nova at mag 7.05 (rounded up to 7.1) at 2242 UT in my 80mm F5 refractor hand held at x18. Twilight made the field a bit bright but the nova was clearly seen. I am making less frequent estimates these days because the nova seems to have reached a plateau at about mag 7.0. Bob
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