Monday, April 13, 2020

Photometry of AE UMa

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AE Uma is a short-period pulsator (SXPHE variable) with a period of 0.086017069 days ( https://aavso.org/vsx/index.php?view=detail.top&o...
Tuesday, April 7, 2020

Tv(b-v) transformation coefficient for Baader Johnson V + ZWO ASI120MM-S

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Even having a single photometric filter (Johnson V), it is useful to determine Tv(b-v) transformation coefficient. This allows the transform...
Saturday, December 21, 2019

PMAK V31: a rotating variable of BY Draconis type

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A new variable of BY Dra type has been discovered! Looking through my DSLR images that were taken last summer and autumn (in the vicinity of...
Tuesday, October 29, 2019

Measuring characteristics of ZWO ASI120MM-S camera

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Using technics from The AAVSO DSLR Observing Manual  ( https://aavso.org/dslr-observing-manual ), I have investigated my ASI120MM-S camera b...
Tuesday, October 22, 2019

Using ZWO ASI120MM-S planetary camera as a photometric device

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Almost all professional photometric studies of variable stars are performed with CCD cameras. Many experienced amateur astronomers use CCD t...
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Wednesday, June 26, 2019

PMAK V26: an eclipsing binary with very shallow minima

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Симпатичний алгольчик, який я зареєстрував як PMAK V26:  https://www.aavso.org/vsx/index.php?view=detail.top&oid=838029   Глибина ос...
Saturday, May 4, 2019

Semi-detached binary PMAK V22

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Погоди як не було, так і нема. На минулих довгих вихідних покопирсався у своєму невеличкому архіві. На тому ж самому багатостраждальному по...