Vendégcsillag-kereső

I've just found a quite bright (~18.2 mag) possible nova on my 4x90s images made with the 43cm CDK at Alnitak Remote Observatory, Nerpio, Spain on September 04.1512UT, using a Luminance filter. Coordinates of Vend91 : 00 42 50.3813 +41 18 58.764 (J2000.0) The discovery of Vend91 has been reported to the TOCP website as PNV J00425038+4118587 and to the TNS server as AT  2026aaom . Update on 11th September: Vend91 is still rising. By this morning it had brightened to approximately 15.2-15,4 magnitudes. Update on 12th September.  we now have three independent spectra, Vend91 is officially an FeII type extragalactic nova!  "Diff1x" image with reference image subtracted. Discovery image. M31 with Vend91 on 10th September, using the 28 cm RASA at UDRO (iTelescope.net), Green channel (TG)   The central region of M31 cropped, Vend91 marked Rencent image with te 43 cm CDK at UDRO, using Luminance filter Update on September 12: We now have three independent spectra of Ve...

During the regular check of my CCD images of M31 within the framework of our Vend-RNe program on 12.0664UT November 2022 I discovered a 16.6C bright possible nova at the following approximate position: 00 42 47.23 +41 16 19.8  (J2000.0). Update: it seem this is an independent discovery of PNV J00424719+4116196 which is probably identical with the recurrent nova M31N 1984-07a. My images were made around half day before the XOSS team discovery images. Update 2: M31N 2022-11b: Additional Photometry and Confirmation as the Fourth Reported Eruption of the M31 Recurrent Nova M31N 1984-07a ( ATEL #15779 ) The possible nova is clearly visible on the subtracted images (new image: 11/12 November, reference image: 10/11 November). The possible nova on my 4x45s stacked images made on 12th November 2022 01:35 UT with the 0.43-m f/6.8 reflector remotely at Mayhill, New Mexico, US using Luminance filter.

I discovered a new symbiotic variable star, Vend47 in outburts during course of our "Vendégcsillag-kereső" /Guest Star Hunter/ Programme. Update: symbiotic nova outburst of Vend47 (=V426 Sge) detected in 1968. Vend47 was found  on my 4x60s DSLR images of my "QW Sge" field made Canon EOS 1000D camera with 180mm focus telephoto lens in Zsámbék , Hungary. The star was 12.0TG on 31.9451 July and 11.66TG on 3,9886 Aug. and 10.7TG on 08.9381 Aug. VSX listed an SR variable ASASSN-V J195442.95+172212.6 with a range between 12.16-12.84V with 418 days period. ASAS-SN data show a sudden rise from 12.025C on 05.49 August to 11.113V on 06.3317 Aug -- a strange fast brightening for an SR variable with 418 days period. So I suggested it was a symbiotic variable in outburst when it was submitted to the IAU Central Bureau for Astronomical Telegrams Transient Object Confirmation Page (TOCP) as a new discovery  where it was designated TCP J19544251+1722281 . Short...