This is a combination of the Skydomes “Northern Lights” and “Starlight Sky” to give a more vibrant starlight to compliment the aurorae.
32-bit starry sky mixed with 14-bit RAW’s of Northern Lights. Please note that with the RAW’s mixed in, the Northern Lights map could not be considered a true HDRI.
360/180 degrees Spherical HDR resolution: 12272×6136 2-EV 3-step exposurePreview of the Northern Lights skydome: https://www.artstation.com/artwork/Qr2OD8 You can get updated version of this product (and wider collection of other Northern Lights skydomes) with the same price from the following link. I can’t host the same product here because of file size constraints: https://www.cgtrader.com/3d-models/textures/natural/skydome-hdri-northern-lights-and-stars