OED1, An Unclassified Object, CDK24

OED1, This object was first discovered in January 2024 and is in the deep southern constellation Vela . It is 940 light years distant located adjacent to the Vela supernova remnant(SNR) and near the Pencil nebula NGC 2736 which is part of the remnant. It is done in false color where red in the image is emission from  Hydrogen gas, and blue, green from Oxygen. While in false color these are actually close to the actual colors as Hydrogen alpha emission is in the deep red and Oxygen III emission is blue green. In the sky it is about 45 x 30 arc minutes in size or about 1.5X the width of the full moon. The true origin of this object is unknown but the two discovers, Marcel Drechsler & Aygen Erkaslan, noted that it lies outside the emission envelope of the Vela SNR, which reinforces the assumption that this mysterious bubble might indeed be a structure in its own. Based on the the H-alpha and [O III] emission morphology, the “bubble” appears to be due to an expanding shock front with a velocity of around 100 km/s. They suggest that it is likely resulting from winds and radiation of a massive star which as yet remains undetected. Another possibility is that it is a planetary nebula remnant of a Sun like star but again the central star is not visible. It is a very interesting object together with the rising bubble. The following is a link to an image done by the discovers that shows OED1 in a wider field of view including a piece of the pencil nebula. https://app.astrobin.com/i/q36dx3?fbclid=IwY2xjawJ4rlBleHRuA2FlbQIxMABicmlkETExanN6V2l1djB0enhScDExAR7PBiZayOoDmoZOiZrMuJnrceV-Pfg5mSLvxMFYVhkunTeJwSC4ijFFM5pVgw_aem_E0MHnF_m5MW8kTeOlU1EBg  This image was taken in Rio Hurtado Chile using Martin Pugh’s 24″ Planewave CDK24 telescope and processed by Michael Adler.